Shop by Firearm Platform

Browse products built to fit your platform. Select a firearm to see what's compatible — or use the filter to narrow further.

Most-Shopped Platforms

68Grand Power Stribog Grand Power Stribog 40Springfield Kuna Springfield Kuna 73H&K H&K 69Sig MPX / MCX Sig MPX / MCX 89B&T B&T

All 31 Platforms

AK & Variants 59 AR & Variants 96 B&T 89 Beretta PMX 33 Brownells BRN-180 42 CMMG Dissent 36 CZ 86 Faxon ARAK 25 FN SCAR 57 Foxtrot Mike 38 GForce Blade 32 Glock Grand Power Stribog 68 H&K 73 IWI 57 KelTec 47 Kriss Vector 49 LWRC SMG45 14 MAC 11/9 25 MAC-IX 30 Masterpiece Arms 25 Matador Arms MAT-9 29 PSA Jakl 45 PWS UXR 43 Robinson Arms XCR 34 Ruger 54 Sig MPX / MCX 69 Springfield Kuna 40 Taurus RPC 33 UTAS UT9 51 Zenith ZF-56 / ZF-300 31

Why Platform-Specific Compatibility Matters

The right accessory for the wrong platform is the wrong accessory. A3 catalogs every product with explicit platform compatibility data — so the brace built for an H&K MP5 isn't shown to someone shopping for a CZ Bren 2. Our taxonomy is built around how shooters actually buy: pick the firearm first, then narrow by what you need. Each platform page surfaces only products that have been tested and fit-checked against that firearm. For products that span multiple platforms via adapter — most HDA3 stocks and modular braces, for example — the variant selector on the product page lets you pick your specific firearm at checkout.

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