Information Jeff Rodhouse · September 16, 2026 · 21 min read ← Back to Blog

Performance-Based vs. Brand-Specific Ballistic Shield Specifications: A Guide for Government Purchasing

Writing a ballistic shield specification can appear straightforward. An agency identifies a shield it likes, lists the desired protection level, dimensions, weight, viewport, handles, and accessories, and issues a solicitation.

But one decision can significantly affect the entire procurement: Should the specification describe the performance the agency needs, or should it identify a particular manufacturer and model?

For government purchasers, this distinction can affect competition, proposal evaluation, product availability, pricing, and ultimately whether the equipment received actually satisfies the agency's operational requirements.

A well-developed performance-based specification focuses primarily on measurable requirements rather than attempting to reproduce every characteristic of an existing product. A brand-specific specification, by comparison, identifies a particular manufacturer's product or characteristics unique to that product.

There are circumstances in which identifying a brand may be appropriate. There are also circumstances in which doing so unnecessarily restricts competition.

This article explains the differences between performance-based, brand-specific, and brand-name-or-equal ballistic shield specifications and identifies practical considerations for government agencies developing RFQs, IFBs, RFPs, and other purchasing documents.

For a broader step-by-step discussion of shield specifications, see How to Write a Ballistic Shield Specification for Government Purchasing.

What Is a Performance-Based Specification?

A performance-based specification describes what the product must accomplish rather than unnecessarily dictating exactly how a manufacturer must design or construct it.

For a ballistic shield procurement, performance requirements might address:

  • Required ballistic protection
  • Applicable testing requirements
  • Minimum or maximum shield dimensions
  • Maximum total configured weight
  • Required viewport dimensions or viewing area
  • Ambidextrous operation, when required
  • Lighting requirements, when required
  • Warranty requirements
  • Required documentation
  • Delivery requirements
  • Country-of-origin requirements, when applicable

The agency establishes the minimum acceptable outcome while allowing qualified manufacturers to propose products that meet those requirements using their own engineering and construction methods.

This approach can increase competition and allow agencies to consider products they may not have identified during their initial market research.

What Is a Brand-Specific Specification?

A brand-specific specification identifies a particular manufacturer, product, model, or proprietary characteristic.

For example, a solicitation might request:

"Manufacturer X, Model ABC123."

If no alternative is permitted, the requirement effectively directs the procurement toward that specific product.

That may be justified in certain circumstances, depending on applicable procurement rules and the agency's actual requirements. However, government purchasers should understand why that particular product is necessary rather than selecting it simply because personnel are familiar with the brand.

A product being preferred by an end user is not necessarily the same thing as a product characteristic being essential to the agency's requirement.

What Does "Brand Name or Equal" Mean?

Brand-name-or-equal purchasing occupies a middle ground.

A solicitation can identify an existing product as a reference while allowing competing manufacturers to offer products that satisfy the required characteristics.

For federal procurements subject to the Federal Acquisition Regulation, FAR 11.104 provides for the use of brand-name-or-equal purchase descriptions under appropriate circumstances.

The important part is the phrase "or equal."

It does not simply mean that any broadly similar product must be accepted. The solicitation should identify the salient physical, functional, or performance characteristics an equal product must possess to be acceptable.

Those characteristics establish the basis for determining equivalency.

What Are Salient Characteristics?

Salient characteristics are the characteristics of the referenced product that are essential to satisfying the government's requirement.

In a ballistic shield procurement, examples might include:

  • Required ballistic protection
  • Specified threat performance
  • Maximum allowable weight
  • Minimum protective coverage
  • Maximum dimensions required for vehicle storage
  • Required viewport
  • Minimum usable viewport dimensions
  • Required handle functionality
  • Ambidextrous use
  • Required lighting performance
  • Required warranty period
  • Required test documentation

The objective is not to copy every detail from the reference product.

The objective is to identify which characteristics actually matter to the agency.

Why This Distinction Matters

Imagine that an agency has successfully evaluated a particular ballistic shield and wants to purchase additional units.

The evaluated shield weighs 21 pounds, measures approximately 20 by 30 inches, incorporates a ballistic viewport, uses a particular handle design, and provides the required rifle-threat protection.

There are several ways the agency might describe its requirement.

It could simply specify the exact manufacturer and model.

Alternatively, it could identify the product as a reference and state the characteristics an equal shield must satisfy.

Or the agency could develop a fully performance-oriented specification based on the underlying operational requirements discovered during its evaluation.

The last two approaches may permit competition from manufacturers whose shields accomplish the same mission using different designs.

Federal Procurement Policy Favors Performance-Oriented Requirements

The Federal Acquisition Regulation establishes an order of precedence for requirements documents that places performance-oriented documents ahead of detailed design-oriented documents.

FAR 11.104 further states that performance specifications are preferred as a means of encouraging offerors to propose innovative solutions, while recognizing that brand-name-or-equal descriptions may be advantageous in some circumstances.

This distinction is important.

Government procurement does not necessarily require agencies to avoid all references to commercial products. Instead, requirements should be developed around the agency's legitimate needs and the applicable procurement rules.

State, county, municipal, cooperative-purchasing, grant-funded, and other procurements may operate under different statutes, regulations, policies, or purchasing procedures. Agencies should always follow the rules applicable to their specific procurement.

When a Particular Brand May Be Necessary

There can be legitimate reasons why an agency requires a particular product or feature.

Examples in government purchasing can include situations involving:

  • Compatibility with existing equipment
  • Standardization requirements
  • Interchangeability of components
  • Existing maintenance or support infrastructure
  • A specific essential performance capability
  • Other documented agency requirements

For federal acquisitions, FAR 11.105 generally prohibits writing requirements around a particular brand, product, or manufacturer-peculiar feature when doing so would preclude other manufacturers unless the particular requirement is essential and the applicable market-research, justification, approval, and documentation requirements are satisfied.

The lesson for shield procurement personnel is simple: if a specific brand or proprietary feature is genuinely necessary, document why it is necessary.

Start With the Mission, Not the Manufacturer

One of the most effective ways to develop a performance-based shield specification is to begin without looking at a manufacturer's catalog.

Start by defining the mission.

Questions might include:

  • Who will carry the shield?
  • What ballistic threats must it address?
  • How much coverage is required?
  • How long might personnel need to carry it?
  • Where will the shield be stored?
  • Does it need to fit inside a particular vehicle compartment?
  • Is a viewport required?
  • Is integrated lighting required?
  • Must the shield accommodate right- and left-handed users?
  • What documentation will the agency require before acceptance?

Once these questions are answered, the agency can translate operational needs into measurable requirements.

For additional mission-selection considerations, see Choosing the Right Ballistic Shield for Your Mission.

Ballistic Protection Should Be a Measurable Requirement

Protection is the most important performance requirement of a ballistic shield, but the specification needs to be more meaningful than terms such as "rifle rated," "high-powered rifle protection," or "bulletproof."

Agencies should identify the required ballistic performance and the documentation that must support the manufacturer's claim.

Depending on the procurement, requirements may address:

  • Applicable ballistic protection level
  • Required projectile or threat
  • Applicable test standard or protocol
  • Complete shield testing
  • Viewport testing when applicable
  • Independent laboratory documentation
  • Test report submission

The specification should be sufficiently precise that competing manufacturers understand the same minimum requirement.

For more information about ratings and testing terminology, see Ballistic Ratings Demystified: Understanding NIJ, ASTM, and Protection Levels and How Ballistic Shields Are Tested: Understanding NIJ and ASTM Standards.

Avoid Specifying Materials Unless the Material Is Actually Essential

A common specification-writing mistake is defining the material rather than the required performance.

For example, an agency might specify that a shield must be constructed from a particular type of composite because an existing shield uses that material.

But what does the agency actually need?

It may need:

  • A particular ballistic performance level
  • A maximum finished weight
  • A required thickness range
  • Environmental durability
  • Specific dimensions
  • A particular service characteristic

If another manufacturer can satisfy those requirements using a different engineered material system, specifying the original material may unnecessarily restrict the available solutions.

There are circumstances where material composition is legitimately important. The key is determining whether the material itself is an operational requirement or merely one manufacturer's method of achieving the desired performance.

For an overview of common armor materials, see Understanding Ballistic Materials: Kevlar, UHMWPE, Steel, and Composite Armor.

Specify Maximum Weight Instead of "Lightweight"

"Lightweight" is subjective.

A measurable specification is more useful.

If the agency determines through evaluation that the complete shield must weigh no more than a certain amount, it can establish a maximum configured weight.

That requirement should also make clear what is included in the stated weight.

For example, does total weight include:

  • Viewport
  • Handles
  • Forearm support
  • Integrated light
  • Batteries
  • Identification markings
  • Other permanently installed accessories

Comparing a bare shield from one manufacturer with a fully configured shield from another can produce a misleading evaluation.

Weight should therefore be defined in terms of the configuration the agency will actually receive.

For a deeper examination of this issue, see Ballistic Shield Weight and Balance: Why Two Shields of the Same Weight Can Handle Differently.

Dimensions Should Reflect Operational Constraints

Shield height and width are good examples of requirements that can easily become unnecessarily restrictive.

Suppose the reference product measures 20 inches wide by 30 inches high.

Does the agency actually require a shield that is exactly 20 by 30 inches?

Or does the agency need approximately that amount of protective coverage while remaining within a maximum size needed for mobility or vehicle storage?

A competing shield measuring slightly differently might provide equivalent or greater useful coverage while meeting every operational requirement.

Exact dimensions may still be necessary when equipment must fit a specific storage rack, vehicle compartment, mounting system, or other interface.

Again, the question is whether the number represents an actual requirement or merely reproduces the dimensions of a familiar product.

Viewport Requirements Should Focus on Function and Documentation

A specification stating only "ballistic viewport required" leaves important questions unanswered.

A performance-oriented viewport requirement might address:

  • Required ballistic performance
  • Minimum usable viewing dimensions
  • Maximum overall shield weight
  • Optical clarity
  • Documentation applicable to the viewport
  • Testing of the viewport within the shield configuration
  • Manufacturer service procedures

Agencies should be cautious about specifying a proprietary viewport construction unless that construction itself is essential.

Different manufacturers may use different transparent armor designs to achieve comparable performance.

For a detailed discussion, see Ballistic Shield Viewports: Materials, Optical Clarity, Testing, and Service Considerations.

Handle Requirements Can Also Become Too Prescriptive

Ergonomics matter, but specifications should distinguish between an operational need and a particular manufacturer's implementation.

An agency might determine that it requires:

  • Ambidextrous operation
  • Positive shield control
  • Forearm support
  • Compatibility with issued gloves
  • A configuration suitable for the expected range of users

Those are functional requirements.

By contrast, specifying the exact shape, dimensions, fastener pattern, material, and position of a particular manufacturer's handle could effectively duplicate that manufacturer's design even when other configurations might satisfy the same operational need.

Whenever practical and permitted by the procurement process, structured hands-on evaluations can help agencies determine which ergonomic characteristics are truly important before those characteristics are converted into solicitation requirements.

Be Careful With "Must Match" Specifications

Requirements sometimes accumulate over time through copied specifications.

A department purchases equipment successfully, another department obtains the specification, and the document becomes the starting point for another solicitation.

Eventually, the specification may contain dimensions, features, terminology, or construction details that nobody can explain.

Every mandatory requirement should answer a basic question:

What agency need does this requirement satisfy?

If the answer is simply "because that's how the existing product is made," the requirement deserves another look.

Separate Mandatory Requirements From Preferences

One of the best ways to improve a shield solicitation is to distinguish true minimum requirements from desirable features.

Possible Mandatory Requirements

  • Required ballistic performance
  • Required test documentation
  • Maximum configured weight
  • Required protective coverage
  • Maximum dimensions when storage creates a hard limit
  • Viewport when operationally required
  • Required warranty
  • Delivery deadline

Possible Preferred Features

  • Particular color
  • Optional markings
  • Alternative lighting packages
  • Carrying accessories
  • Storage accessories
  • Other features that are beneficial but not essential

A feature should not automatically become mandatory simply because it would be convenient.

Separating requirements from preferences can make proposal evaluation clearer while preserving the agency's essential needs.

Don't Use a Brand Reference Without Defining "Equal"

One of the most important lessons from federal brand-name-or-equal procurement is that the reference product alone is not enough.

If a solicitation states:

"Brand X Model Y or equal"

the agency still needs to establish what characteristics make another product equal.

Otherwise, manufacturers may not know whether equivalency is determined by:

  • Protection level
  • Weight
  • Dimensions
  • Viewport size
  • Handle configuration
  • Lighting
  • Warranty
  • Materials
  • Appearance
  • Some combination of these characteristics

Clearly identifying the salient characteristics makes the requirement easier for vendors to understand and easier for procurement personnel to evaluate consistently.

How Federal "Equal" Products Are Evaluated

FAR 52.211-6 provides useful insight into how brand-name-or-equal offers work in federal procurement.

When offering an equal product under a solicitation containing that provision, an offeror must identify the proposed product and provide descriptive information sufficient to demonstrate that it meets the solicitation's salient characteristics.

The contracting officer evaluates the equal product based on the information furnished or identified by the offeror and reasonably available to the contracting officer.

This has an important practical implication for ballistic shield manufacturers and distributors:

Do not simply write "meets or exceeds."

A responsive submission should clearly show how the proposed shield satisfies each applicable requirement.

A Compliance Matrix Can Simplify Evaluation

One practical method is to require vendors to submit a compliance matrix.

The solicitation requirement might appear in one column and the vendor's response in another.

For example:

  • Required ballistic protection — manufacturer response and supporting report reference
  • Maximum configured weight — proposed shield weight
  • Required dimensions — proposed dimensions
  • Viewport requirement — proposed viewing dimensions and documentation
  • Warranty — warranty duration and terms
  • Delivery — proposed delivery schedule

The agency can also request that the vendor identify the page, test report, drawing, specification sheet, or other documentation supporting each response.

This makes evaluation substantially easier than searching through dozens of pages of marketing literature.

Require Evidence for Important Performance Claims

A performance specification is only useful if the agency can verify compliance.

If a requirement matters enough to determine award or acceptance, the solicitation should consider what evidence demonstrates compliance.

Depending on the requirement, documentation might include:

  • Independent ballistic test reports
  • Product specification sheets
  • Dimensioned drawings
  • Manufacturer warranty documentation
  • Country-of-origin documentation
  • Photographs
  • Technical literature
  • Samples or demonstration units when appropriate and permitted

A manufacturer's marketing statement may be useful for initial research, but critical requirements should be supported by appropriate technical documentation.

Test Reports Deserve Particular Attention

Ballistic protection is not a characteristic that procurement personnel can confirm by visually inspecting a shield.

Documentation therefore becomes especially important.

An agency reviewing a test report should determine whether the report corresponds to the product being offered and whether the documented testing supports the required threat and configuration.

Relevant questions can include:

  • What shield or armor model was tested?
  • What threat was used?
  • What velocities were recorded?
  • How many impacts were performed?
  • What portions of the shield were evaluated?
  • Was the viewport included?
  • Were interfaces or potential weak points addressed?
  • What laboratory performed the test?
  • Does the offered configuration correspond to the tested configuration?

This subject deserves more attention than can be provided here and will be addressed separately in our guide to reading ballistic test reports.

Avoid Unnecessarily Combining Requirements From Different Products

Another procurement problem can occur when specifications are assembled by selecting preferred characteristics from several different shields.

The resulting requirement may ask for:

  • The weight of the lightest product
  • The coverage of the largest product
  • The viewport of another product
  • The accessory package of a fourth product
  • The lowest observed price

Individually, each characteristic may exist somewhere in the marketplace. The combined specification, however, may describe a product that does not exist.

Market research should therefore evaluate the complete requirement, not just each line item independently.

Market Research Should Come Before Final Specifications

Market research can help agencies understand what the commercial market can realistically provide.

Before finalizing a ballistic shield specification, procurement personnel may benefit from reviewing:

  • Multiple manufacturers
  • Available protection levels
  • Common size ranges
  • Configured weights
  • Viewport options
  • Testing documentation
  • Warranty terms
  • Manufacturing lead times
  • Available accessories
  • Pricing ranges

The purpose is not to allow manufacturers to dictate the requirement. It is to help the agency determine whether its requirements reflect actual operational needs and whether multiple products can reasonably compete.

Example: Turning a Brand-Specific Requirement Into a Performance Requirement

Consider a hypothetical solicitation that initially states:

"Agency requires Brand X Model 3000 ballistic shield."

After reviewing its actual needs, the agency determines that what matters is:

  • Required rifle-threat ballistic performance
  • Independent ballistic test documentation
  • Protective coverage within a defined range
  • A maximum complete-system weight
  • A ballistic viewport meeting the required protection
  • Ambidextrous operation
  • A defined minimum warranty
  • Delivery within the required schedule

The agency can now describe those requirements directly.

The original product may still qualify. But other manufacturers now have an opportunity to demonstrate that their products satisfy the same mission requirements.

That is the fundamental advantage of a well-developed performance specification.

Example: Using "Brand Name or Equal" More Effectively

Sometimes an agency has a reference product that communicates the general type and quality of equipment required.

Rather than merely stating:

"Brand X Model 3000 or equal."

the solicitation can identify the reference product and then list the salient characteristics that an equal product must meet.

Those might include requirements such as:

  • Specified ballistic threat performance
  • Complete configured weight not to exceed the stated maximum
  • Minimum protective dimensions
  • Ballistically rated viewport
  • Ambidextrous handle configuration
  • Required lighting capability
  • Minimum warranty period
  • Required test documentation

This gives potential offerors a meaningful basis for determining whether their product qualifies as an equal.

Common Mistakes When Writing Brand-Name-or-Equal Specifications

Listing a Brand Without Salient Characteristics

Simply adding "or equal" does not clearly communicate what an alternative product must accomplish.

Copying Every Specification From the Reference Product

If every minor characteristic of one product becomes mandatory, the resulting solicitation may function like a brand-specific requirement even though the words "or equal" appear in the document.

Using Subjective Terms

Terms such as "lightweight," "heavy duty," "high quality," and "tactical grade" are difficult to evaluate objectively without measurable criteria.

Requiring Features Without Identifying the Need

Each mandatory feature should support an actual operational, compatibility, safety, or procurement requirement.

Failing to Identify Required Documentation

If test reports, drawings, warranty terms, or technical literature will be needed to determine compliance, the solicitation should make that expectation clear.

Evaluating Products Using Different Standards

Competing products should be evaluated consistently against the published requirements.

For a broader discussion of purchasing problems, see Common Mistakes Departments Make When Purchasing Ballistic Shields.

Questions Procurement Personnel Should Ask Before Publishing a Specification

  • What mission requirement does each mandatory specification support?
  • Are the requirements measurable?
  • Are subjective terms defined?
  • Are ballistic requirements supported by an identified testing requirement?
  • Does the specified weight represent the complete configuration?
  • Are exact dimensions operationally necessary?
  • Are proprietary materials or features genuinely required?
  • If a brand is referenced, have the salient characteristics been identified?
  • Can vendors clearly determine what documentation must be submitted?
  • Can procurement personnel evaluate every requirement consistently?
  • Has market research shown that the requirement is realistic?
  • Does the specification comply with the purchasing rules applicable to the agency?

If a mandatory requirement cannot be connected to an identifiable agency need, it may deserve further review before the solicitation is released.

Performance-Based Does Not Mean Lower Standards

Performance-based procurement is sometimes misunderstood as relaxing the specification to allow more products to qualify.

That is not the objective.

An agency can establish demanding requirements while still using a performance-oriented approach.

It can require a specific ballistic threat performance, maximum weight, minimum coverage, tested viewport, warranty period, documentation package, and delivery schedule.

The difference is that the agency establishes what must be achieved without unnecessarily dictating how every manufacturer must engineer the product.

In some cases, performance requirements can actually produce a more rigorous solicitation because they force the agency to define measurable outcomes rather than relying on a familiar model number.

Performance Specifications Can Encourage Innovation

Armor technology continues to evolve.

Manufacturers may use different composite materials, transparent armor constructions, manufacturing methods, handle systems, lighting configurations, and other engineering approaches.

A specification tied unnecessarily to one construction method can make it difficult for newer solutions to compete even when they meet or exceed the agency's actual requirements.

Performance-oriented specifications can preserve the agency's essential requirements while allowing manufacturers to compete on engineering, weight, ergonomics, durability, support, and value.

This principle is reflected in the federal preference for performance specifications as a means of encouraging innovative solutions.

Frequently Asked Questions

What is a performance-based ballistic shield specification?

It is a specification that primarily defines measurable operational and performance requirements—such as ballistic protection, maximum weight, coverage, viewport requirements, warranty, and documentation—rather than unnecessarily prescribing a particular manufacturer's design.

Can a government solicitation specify a particular ballistic shield brand?

Requirements depend on the procurement rules governing the acquisition. Under the FAR, requirements generally may not be written around a particular brand, product, or manufacturer-peculiar feature that excludes alternatives unless the specified item or feature is essential and the applicable justification and documentation requirements are satisfied.

What does "brand name or equal" mean?

It means a particular commercial product may be identified as a reference while products meeting the specified salient characteristics can also be considered. Under federal FAR procedures, those salient physical, functional, or performance characteristics must be identified in the purchase description.

What is a salient characteristic?

A salient characteristic is a physical, functional, or performance characteristic of the referenced product that an equal product must possess to satisfy the requirement.

Does "or equal" mean an agency must accept any similar shield?

No. An offered equal product must satisfy the applicable requirements and salient characteristics identified in the solicitation.

Should an agency specify the material used to manufacture a ballistic shield?

Only when material composition itself is a legitimate requirement. If the agency's actual needs relate to ballistic performance, weight, dimensions, durability, or another measurable outcome, specifying performance may allow qualified manufacturers to use different engineering approaches.

Should ballistic shield weight be a performance requirement?

It can be. If weight is operationally important, a measurable maximum configured weight is generally more useful than a subjective term such as "lightweight." The specification should make clear what components are included in the stated weight.

Can exact shield dimensions be specified?

Yes, when exact dimensions are genuinely required. For example, a hard dimensional limit may be necessary for vehicle storage or equipment compatibility. If exact dimensions are not essential, a range, minimum coverage requirement, or maximum envelope may permit greater competition.

What documentation should an agency request from an equal-product offeror?

Depending on the solicitation, useful documentation may include product specifications, ballistic test reports, drawings, warranty terms, descriptive literature, country-of-origin information, and a compliance matrix identifying how the proposed product satisfies each requirement.

Does performance-based procurement mean accepting the lowest-priced shield?

No. Performance-based specifications define the minimum requirements. Award methodology, price evaluation, technical evaluation, best-value considerations, and other factors depend on the procurement method and applicable rules.

Do FAR requirements apply to every police department?

No. The FAR governs federal acquisition. State and local agencies may operate under different statutes, regulations, purchasing ordinances, grant conditions, cooperative contracts, or agency policies. Procurement personnel should apply the rules governing their particular acquisition.

Final Thoughts

A well-written ballistic shield specification should begin with the agency's mission rather than a manufacturer's catalog.

Protection, weight, coverage, visibility, ergonomics, testing documentation, warranty, delivery, and support can all be expressed as meaningful requirements without unnecessarily reproducing every characteristic of one existing product.

When a reference product is useful, a properly developed brand-name-or-equal description can identify the characteristics that actually matter while giving other manufacturers a clear opportunity to demonstrate equivalency.

When a particular brand or proprietary feature is truly essential, agencies should follow the justification, documentation, and approval requirements applicable to their procurement.

The objective is not competition for its own sake and it is not reducing standards. The objective is a specification that accurately describes what the agency needs, allows proposals to be evaluated consistently, and ultimately results in protective equipment appropriate for the intended mission.

Need Assistance Developing Ballistic Shield Specifications?

Automotive Armor Manufacturing can help agencies evaluate ballistic protection requirements, shield configurations, testing documentation, weight, dimensions, viewports, warranty considerations, and other technical factors relevant to an upcoming procurement. Contact Automotive Armor Manufacturing to discuss your project or request additional product information.

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