Brigade Manufacturing BM-300 AR-15 .300 Blackout 16-Inch Complete Upper – Forged Receiver

The Brigade Manufacturing BM-300 AR-15 .300 Blackout Complete Upper Forged Receiver with a 16-inch barrel, is ideal for rifle shooters. The 16-inch barrel increases bullet velocity compared with shorter barrels and provides ample rail space for accessories, making it excellent for accurate, longer-distance shooting in competitions, hunting and range use while ensuring maximum control. .300 Blackout is renowned for its suppressed performance.

when paired with subsonic ammunition and a suppressor it produces a much-reduced report and softer recoil— yet it remains supersonic-capable for flatter trajectories and strong terminal performance with heavier bullets. Built on the AR platform, the BM-300 benefits from common AR-15 parts for easy integration and maintenance, and the cartridge’s versatility.

Materials

• Receiver: 7075-T6 Aluminum Forging (MILSPEC)
• Barrel: 4150 V
• Barrel Finish: Nitride

Features

• Platform: AR-15
• Caliber: 300 Blackout 
• Finish: Cerakote
• Rail: Free Float, U-LOK
• Rail Length: 15 inch
• Barrel Length: 16 inch
• Barrel Twist: 1:8
• Barrel Extension: M4
• Barrel Thread: 5/8x24
• Muzzle Device: A2 Flash Hider, Bird cage 
• Bolt Carrier Group: *Not included*
• Charging Handle: *Not included*

Operating System

• Gas Impingement