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The Brigade Arms BM-15 5.56 pistol with 10.5-inch barrel and SBA3 brace delivers serious capability in a compact platform built for shooters who want modularity without sacrificing control. This AR-15 pistol combines a free-floating M-LOK handguard with a 10-inch rail system that gives you abundant real estate for optics, lights, lasers, and other accessories—all while keeping the overall footprint nimble enough for CQB work, range sessions, and short-to-medium distance applications where a short-barreled rifle form factor makes sense.
Built on the AR-15 platform, the BM-15 uses a direct gas impingement operating system and feeds 5.56x45mm NATO ammunition through a reliable, proven design. The 4150 chrome-moly vanadium nitride barrel sports a 1:7 twist rate suited to stabilizing a wide range of 5.56 loads. Ambidextrous controls—charging handle and safety selector—keep the gun equally friendly to lefties and righties, while the A2 pistol grip and mil-spec trigger anchor you with familiar ergonomics and predictable break.
The SBA3 tactical brace gives you a solid cheek weld and support platform, and the Cerakote finish on 7075-T6 aluminum forgings resists corrosion and abuse. If you're building a truck gun, a training platform, or a compact fighting carbine, the BM-15 rewards upgrading with quality optics, mounting systems, and hand placement options.
| Brand | Brigade Arms |
| Model | BM-15 |
| Caliber | 5.56x45mm NATO |
| Barrel Length | 10.5 inches |
| Handguard Length | 10 inches |
| Handguard Type | M-LOK free float |
| Brace | SBA3 tactical brace |
| Grip | A2 pistol grip |
| Trigger | Mil-spec |
| Charging Handle | Ambidextrous |
| Safety Selector | Ambidextrous |
| Operating System | Direct gas impingement |
| Barrel Material | 4150 chrome-moly vanadium nitride |
| Barrel Twist Rate | 1:7 |
| Receiver Material | 7075-T6 aluminum forgings |
| Finish | Cerakote |
| Platform | AR-15 |
The BM-15 excels as a training platform, range gun, truck gun, or close-quarters fighting carbine. The 10.5-inch barrel and compact profile make it agile in confined spaces while the free-floating handguard and extensive M-LOK rail support optics and light setups. It's suited to shooters who want an AR-15 platform in a shorter, more maneuverable package for CQB and short-range work.
Yes. The 10-inch M-LOK free-floating handguard provides abundant real estate for mounting lights, lasers, vertical grips, and other combat accessories. The AR-15 platform ensures compatibility with a vast ecosystem of aftermarket parts and upgrades, so you can tailor the gun to your needs.
The charging handle and safety selector are both ambidextrous, making the BM-15 equally accessible to left-handed and right-handed shooters. The A2 pistol grip is standard AR-15 spec and can be swapped for other grip options if desired.
The BM-15 is chambered in 5.56x45mm NATO with a 1:7 barrel twist, a rate well-suited to stabilizing a broad range of 5.56 loads and bullet weights.

SKU: 198467134 • Weight: 8.4oz