AR-15 300 AAC BLK 10.5" Nitro-Met Quad Upper Assembly with Socom Style Brake, Left Hand

300 Blackout

AR-15 300 AAC BLK 10.5" Nitro-Met Quadrail Upper Assembly with Socom Style Brake, Left Hand Ejecting

Transform your AR-15 with this AR-15 300 AAC BLK 10.5" Nitro-Met Quadrail Upper Assembly designed for left-hand ejection. Perfect for switching your standard 5.56 upper to a 300 Blackout, this assembly is built on a slick side billet AR-15 left-hand upper receiver. The assembly includes a 4150 Chrome Moly barrel, a Socom-style fake suppressor muzzle brake, and a mid-length hardcoat anodized quad free float handguard for superior durability and precision. The .750" low-profile steel gas block and pistol-length gas system provide optimal gas flow for reliable performance. The left-hand ejecting receiver includes a slimline shell deflector, beveled ejection port, and Class III hard coat anodizing. The 1913 Picatinny rail allows for easy accessory attachment.

Key Features:

• Chamber: 300 AAC Blackout (300 BLK)

• Barrel: 10.5" 4150 Chrome Moly with Nitro-Met coating for enhanced durability.

• Barrel Twist: 1:7, optimized for heavier projectiles.

• Barrel Thread: 5/8x24 TPI.

• Muzzle Brake: AR-15 Gen 2 Micro Reverse Thread Socom-style fake suppressor.

• Gas System: Pistol-length gas system with .750" low-profile steel gas block.

• Handguard: 10" Mid-length hardcoat anodized quad free-floating rail.

• Receiver: Slick side billet aluminum upper, left-hand ejecting. Does not require forward assist and dust cover.

• Receiver Finish: Class III hard coat anodized.

• Shell Deflector: Slimline shell deflector for reliable ejection.

• Made in the USA

• Bolt Carrier Group (BCG): Not Included

• Charging Handle: Not Included