BM-300

.300 AAC BLACKOUT SUPPRESSED & TACTICAL PLATFORM

BM-300 Series

The Brigade BM-300 platform is built around the versatile .300 AAC Blackout cartridge. Precision-engineered for maximum performance with both supersonic ammunition and ultra-quiet subsonic suppressed setups on a forged 7075-T6 aluminum platform.

Optimized for Suppressors

Designed to run heavy subsonic rounds cleanly and quietly with a sound suppressor, or hard-hitting supersonic rounds for maximum energy.

Patented U-LOK Rail

Free-float handguard system accepting both M-LOK and KeyMod attachments directly without needing extra adapter rails.

7075-T6 Forged Durability

CNC-machined in Florida from 7075-T6 forged aluminum for structural strength, tight tolerances, and long service life.

Explore BM-300 Platform Categories

All Rifles BM-300 Complete Uppers AR Triggers & Parts

BM-300 Rifle 300 Blackout Forged Receiver 16" Barrel B5 Bravo Stock TYPE 23 P-GRIP 15"- M-LOK Rail A2 Flash Hider -Cerakote OD Green

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$917.59
BM-300 Rifle 300 Blackout Forged Receiver 16" Barrel B5 Bravo Stock TYPE 23 P-GRIP 15" - M-LOK Rail A2 Flash Hider-Cerakote Midnight Bronze

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$917.59
BM-300 Rifle 300 Blackout Forged Receiver 16" Barrel B5 Bravo Stock TYPE 23 P-GRIP 15" - M-LOK Rail A2 Flash Hider -Cerakote Tungsten

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$917.59
BM-300 Rifle 300 Blackout Forged Receiver 16" Barrel B5 Bravo Stock TYPE 23 P-GRIP 15"-M-LOK Rail A2 Flash Hider -Cerakote FDE

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$917.59
BM-300 Rifle300 Blackout Forged Receiver 16" Barrel Cerakote Armor Black B5 Bravo Stock TYPE 23 P-GRIP 15" M-LOK Rail A2 Flash Hider

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1 Review

$917.59
BM-300 Rifle 300 Blackout Forged Receiver 16" Barrel Adjustable Standard Stock 15" M-LOK Rail Flash Hider

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$839.55

PRO GUIDE Selecting the Right Brigade BM-300 .300 Blackout Platform

The Brigade BM-300 Series brings the versatile ballistic advantages of .300 AAC Blackout to standard AR-style controls. Developed specifically to achieve maximum energy out of shorter barrel lengths while offering total suppressed capability, the .300 Blackout allows shooters to switch between heavy subsonic loads (for near-silent shooting with a suppressor) and fast supersonic loads (matching 7.62x39 terminal performance).

Because the .300 Blackout cartridge utilizes standard 5.56 NATO bolt carrier groups and magazine dimensions, the BM-300 offers instant compatibility with standard AR-15 lowers, triggers, and charging handles.

Every BM-300 firearm and upper receiver is precision-machined in Florida from 7075-T6 forged aluminum and paired with our patented free-float U-LOK handguard, letting you attach both M-LOK and KeyMod accessories directly without needing adapters.

Complete BM-300 firearms ship through a licensed FFL dealer, while complete upper receivers ship straight to your door. All Brigade platforms are backed by our factory Limited Lifetime Warranty.