The HighCom Armor Guardian 3s9 is a stand-alone Level III++ rifle plate engineered from a ceramic and UHMWPE composite. NIJ Listed under 0101.06 and validated under both the DEA Hard Armor Protocol and the Rifle Special Threats (RST) protocol, the 3s9 stops a documented 16-round threat matrix — from 5.56x45mm M855A1 at 3,100 fps to 7.62x54R API — while measuring just 1.15 inches thick. Available in sizes from 5x7 through 10x12, in Full Cut or Shooters Cut, the 3s9 is a primary duty plate for law enforcement agencies requiring multi-threat coverage in a single stand-alone package.

Who this is for

• Law enforcement officers: who need a single stand-alone plate that passes DEA Hard Armor Protocol and covers the agency's full patrol threat spectrum without a soft armor backer
• Civilians seeking NIJ Listed protection: who want a CPL-verified plate rated beyond the standard Level III threshold with documented armor-piercing and special threat coverage
• Shooters and range professionals: who require a 10-year warranted ballistic plate rated against M855A1, M61 AP, and BZ API in a 5.3 lb Shooters Cut configuration

Ballistic performance

The 3s9 carries the Level III++ designation, reflecting performance that exceeds the NIJ 0101.06 Level III standard. The ceramic strike face fractures the projectile on impact while the UHMWPE backer captures fragments and absorbs residual energy. This construction delivers stand-alone protection — no soft armor backer required — against threats that defeat standard steel and single-material polyethylene plates.

Validated threat coverage spans three testing protocols. Under NIJ 0101.06, the plate stops 7.62mm FMJ Steel Jacketed M80 at 2,780 fps. Under the DEA 2017 Hard Armor Protocol, it stops five additional rounds including 5.56x45mm M855 Green Tip at 3,100 fps, 7.62x39mm Mild Steel Core at 2,400 fps, and .308 Winchester PSPB Core-Lokt Ultra Bonded at 2,600 fps. The RST (Rifle Special Threats) protocol adds eleven further rounds including 5.56x45mm M193 FMJ at 3,250 fps, 5.56x45mm M855A1 at 3,100 fps, 7.62x51mm M61 AP at 2,750 fps, 7.62x39mm BZ API at 2,380 fps, 7.62x54R LPS at 2,880 fps, 7.62x54R-b-32 API at 2,800 fps, and a 12-gauge 1 oz. slug at 1,145 fps.

Ballistic test data

Plate geometry and cut options

All 3s9 configurations use a single-curve profile. Three cut options cover the most common carrier formats: Full Cut for maximum coverage, Shooters Cut for shoulder mobility and cummerbund clearance, and Swimmers Cut for low-profile high-mobility applications. Note that the 10x12 Shooters Cut carries nominal dimensions of 9.5x11.5 inches. The exterior cover is 1000D CORDURA with a textured nylon finish.

Specifications

Fit and carrier compatibility

The 10x12 Shooters Cut is the most common patrol and tactical format and fits the plate pocket of most standard-issue and commercial plate carriers sized for 10x12 plates. The 10x12 Full Cut and Medium-format (8x10) options suit carriers with deeper or wider plate pockets. Swimmers Cut plates fit carriers with Swimmers-cut-specific pockets or wide-mouth pockets that taper at the shoulder zone. If you need help confirming fit for a specific carrier, contact us before ordering.

Frequently asked questions

Is this plate NIJ Listed or NIJ Certified?

Yes. The Guardian 3s9 is NIJ Listed under standard 0101.06 and appears on the NIJ Compliant Products List (CPL). The Level III++ designation reflects additional validated threat coverage beyond the core NIJ 0101.06 Level III test matrix, including M855A1, M61 AP, and multiple API rounds that are not part of the standard NIJ Level III test protocol.

What rounds does the 3s9 stop?

The 3s9 is tested against 16 documented threats across three protocols. Key rounds include 7.62mm M80 FMJ at 2,780 fps (NIJ 0101.06), 5.56x45mm M855 Green Tip at 3,100 fps, 5.56x45mm M193 at 3,250 fps, 5.56x45mm M855A1 at 3,100 fps, 7.62x39mm BZ API at 2,380 fps, 7.62x51mm M61 AP at 2,750 fps, and 7.62x54R API at 2,800 fps. See the full test table above for all velocities and grain weights.

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

NIJ 0101.06 defines Level III as the baseline rifle protection standard, tested against 7.62mm M80 FMJ. Level III+ is a common vendor-designated special threat tier covering rounds like M855 and M193 that defeat standard Level III plates. Level III++ extends further, adding validated coverage against armor-piercing variants such as M61 AP and API rounds. Neither Level III+ nor Level III++ are formal NIJ designations — they reflect independently validated threat performance beyond the NIJ baseline.

Does this plate require a soft armor backer?

No. The Guardian 3s9 is rated stand-alone, meaning it provides its rated protection without a soft armor backer inserted behind it. A trauma pad or soft armor backer may be added for behind-armor blunt trauma (BABT) mitigation, but is not required for the plate to achieve its stated ballistic rating.

How heavy is a two-plate 10x12 setup?

Two 10x12 Shooters Cut plates weigh a combined 10.6 lbs (4.8 kg). Two 10x12 Full Cut plates weigh 12.6 lbs (5.8 kg). Paired with a standard plate carrier shell, total system weight typically falls in the 13–16 lb range depending on the carrier and accessory load.

Can this plate be shipped to my state?

The Guardian 3s9 cannot be shipped to New York or Connecticut due to state body armor restrictions. Exceptions apply to law enforcement officers and agencies in those states. 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. The 3s9 is subject to U.S. export regulations and cannot be exported from the United States without proper authorization.