Standalone plates work alone. ICW plates require a IIIA backer — skip it and backface deformation exceeds 44mm. 2026 guide: 7 FAQs, weight tables, expert picks.
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6x6 vs 6x8, ceramic vs poly, cummerbund fit: everything you need to choose side plates that actually protect the lateral cardiac gap. Updated May 2026.
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AR550 steel plates rate at 545-560 BHN and defeat 5.56 M855 up to 3,100 FPS. How AR550 differs from AR500, spall coatings, weight tradeoffs, and who should buy it.
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Single-curve plates cost $135–$160 and suit wear under 2 hours. Multi-curve plates ($230–$450) contour both axes for all-day duty use. Same NIJ ballistic rating either way.
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UHMWPE plates weigh 3–4.5 lbs and resist water — ceramic stops AP rounds — steel costs least but needs spall liner. Compare all three and buy right.
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NIJ Level IV plates stop .30 cal M2 AP at 2,880 fps — the only hard-armor rating that defeats armor-piercing rounds. Weight, ceramic construction, lifespan, and who actually needs them.
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