The Shellback Tactical Skirmish Level IV Body Armor Kit pairs the Skirmish plate carrier with two Prevail Series Model 4S17 alumina ceramic hard armor plates to deliver NIJ 0101.06 certified Level IV protection against armor-piercing rifle threats. Each 4S17 plate is NIJ Listed on the Compliant Products List, stands alone without a soft armor backer, and stops the .30 Cal M2 AP round at 2,880 fps — the standard NIJ Level IV test round. The kit ships ready to wear in 10x12 Shooters Cut configuration, made in the USA, and backed by a 10-year ballistic warranty on the plates and a lifetime warranty on the carrier.

Who this is for

• Law enforcement officers and security professionals who need certified Level IV rifle protection in a deployable carrier they can don quickly and adjust on the fly.
• Civilians and journalists in high-risk environments who want a complete, NIJ Listed plate-and-carrier solution without sourcing components separately.
• First-time plate carrier buyers who want a fully adjustable, comfort-padded kit that ships in 24 hours and requires no additional ballistic components to be operational.

Ballistic performance

The Model 4S17 is constructed of alumina ceramic bonded to a composite backing. It provides full edge-to-edge, stand-alone Level IV protection, meaning no soft armor backer is required for the rated performance. The plate is multi-hit rated and fully sealed in a 1000-denier Cordura nylon cover that resists liquids, chemicals, and harsh field conditions.

Beyond the NIJ 0101.06 Level IV requirement (.30 Cal M2 AP), the 4S17 is Special Threat Rated to stop M855 and M855A1 armor-piercing rounds and is DEA Hard Armor Protocol compliant. The plate defeats a documented range of common rifle threats across multiple calibers at standard service velocities.

Independent ballistic test data

Plate compatibility and cut geometry

Each 4S17 plate ships in a 10x12 Shooters Cut, single-curve profile. The nominal listed size is 10x12 with an actual measurement of 9.5 x 11.5 inches and a thickness of 0.95 inches. The Skirmish carrier is sized specifically for 10x12 Shooters Cut plates, so the 4S17 drops directly into the carrier's plate pockets with no modification needed. The single-curve geometry conforms to a flat-to-moderate chest profile; buyers with a pronounced chest curve may want to contact us before ordering to confirm fit.

Skirmish plate carrier features

The Skirmish carrier is constructed from 500-denier nylon with a low-profile silhouette designed to maximize mobility. Interior 3D spacer mesh padding runs across contact surfaces for ventilation and all-day comfort. A front kangaroo pouch provides immediate-access storage, and the exterior MOLLE field accepts standard 1-inch PALS-compatible pouches, ID placards, and accessories. The cummerbund accepts soft armor inserts for expanded side coverage.

Shoulder straps and cummerbund are both fully adjustable to fit a wide range of body types. Heavy-duty bar tacking reinforces key stress points throughout. The carrier is backed by a lifetime warranty against manufacturing and material defects.

Specifications

Fit and carrier compatibility

The Skirmish carrier's shoulder straps and cummerbund adjust fully to accommodate most body types, from slim to larger frames. The cummerbund is available in a standard size; buyers who need extended side coverage should contact us to confirm cummerbund sizing before ordering. The carrier accepts 10x12 Shooters Cut plates only — SAPI cut or larger 11x14 plates will not seat correctly. The front kangaroo pouch and MOLLE field remain accessible regardless of torso adjustments.

Frequently asked questions

Can this kit be shipped to my state?

This kit cannot be shipped to New York or Connecticut due to state body armor restrictions. It is ITAR controlled and cannot be exported without approval from the US State Department. Under 18 U.S.C. § 931, anyone with a federal felony conviction for a crime of violence is prohibited from purchasing or possessing body armor.

Are the 4S17 plates NIJ Certified or just tested to NIJ standards?

NIJ Certified. The Model 4S17 is NIJ Listed on the NIJ Compliant Products List under NIJ 0101.06 Level IV — the most rigorous independent certification path available for hard armor. Tested-to-standard and CPL-listed are meaningfully different; the 4S17 has completed the full certification process and appears on the published list.

What is the difference between Level III, Level III+, and Level IV?

Level III is the NIJ baseline rifle rating, tested against 7.62x51 M80 FMJ at 2,780 fps. Level III+ is a vendor-specific special threat designation, not an official NIJ tier, typically covering M855 and M193 at higher velocities. Level IV is the highest NIJ-certified rifle rating, tested against .30 Cal M2 armor-piercing at 2,880 fps. The 4S17 meets Level IV and also carries special threat ratings beyond that baseline.

Will this plate stop M855A1 enhanced performance rounds?

Yes. The 4S17 is Special Threat Rated to stop 5.56x45 M855A1 at 3,100 fps and 5.56x45 M193 at 3,250 fps. Both are confirmed in the published ballistic test data above. M855A1 is not required by the NIJ Level IV standard, so this represents protection beyond the certified baseline.

Does this plate require a soft armor backer?

No. The 4S17 is a stand-alone plate with full edge-to-edge protection. A soft armor backer is not required to achieve the rated Level IV performance. A backer can be added for additional backface deformation reduction if desired, and the Skirmish carrier's cummerbund accepts soft armor inserts for expanded side coverage.

How heavy is a two-plate setup in this kit?

Each 4S17 plate weighs 7.2 lbs, so the two-plate load is 14.4 lbs of ballistic material before the carrier. The Skirmish carrier adds additional weight. For buyers sensitive to total carry weight, a lighter Level IV option may be worth evaluating — contact us and we can walk through the available alternatives.