BM-M4

MIL-SPEC 5.56 NATO TACTICAL CARBINE PLATFORM

M4 Rifle & Carbine Series

The Brigade M4 Rifle Series captures the legendary performance of the iconic military M4 carbine pattern, upgraded with modern American craftsmanship. Built on MIL-SPEC 7075-T6 forged receivers, our 5.56 NATO M4 rifles deliver combat-proven direct-impingement cycling and battle-ready reliability.

MIL-SPEC 7075-T6 Forging

Upper and lower receivers are CNC-machined from 7075-T6 aircraft-grade aluminum forgings for absolute strength under severe firing conditions.

Patented U-LOK Free-Float Rail

Features our proprietary U-LOK handguard system, allowing direct attachment of both M-LOK and KeyMod accessories without adapters.

Combat-Proven 5.56 Ballistics

Chambered in 5.56 NATO / .223 Rem to offer maximum muzzle velocity, low recoil impulse, and flat target trajectories.

Explore Tactical Platform Categories

All Rifles BM-15 Series AR Triggers & Parts

BM-15 Pistol 5.56 Forged Receiver 16" Cerakote Armor Black Flip up and A-Post Sight Adjustable Stock 7.25" Quad Rail A2 Flash Hider

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$1,129.96
BM-15 Pistol 5.56 Forged Receiver 16" Cerakote Armor Black Carry Handle and A-Post Sight Adjustable Stock 7.25" Quad Rail A2 Flash Hider

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$1,104.24
BM-M4 Rifle 5.56 16" Cerakote Armor Black Carry Handle and A-Post Sight Adjustable Stock Delta Ring A2 Flash Hider

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$1,045.56
BM-M4 Rifle 5.56 16" Cerakote Armor Black Flip up and A-Post Sight Adjustable Stock Delta Ring A2 Flash Hider

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$1,071.28

PRO GUIDE Selecting the Right Brigade M4 Rifle & M4 Carbine

The M4 Rifle pattern remains the gold standard for tactical firearms, personal defense weapons, and sporting carbines around the world. Designed around the versatile 5.56 NATO / .223 Remington cartridge, the M4 platform provides light overall weight, exceptional maneuverability in close quarters, and reliable long-range accuracy out to several hundred yards.

Whether you are looking for a classic MIL-SPEC defensive setup or a modular tactical shooter, the Brigade M4 Series utilizes direct-impingement gas mechanics for smooth cycling, lower felt recoil, and full cross-compatibility with standard AR-15 components and STANAG magazines.

Every Brigade M4 rifle is precision CNC-machined in Florida from 7075-T6 forged aluminum to withstand aggressive firing schedules. Outfitted with our patented free-float U-LOK handguard, shooters can attach weapon lights, laser aiming devices, vertical grips, and slings using either M-LOK or KeyMod attachment standards without needing adapters.

All complete Brigade M4 rifles require transfer through a licensed FFL dealer and are backed by Brigade Manufacturing’s factory Limited Lifetime Warranty.