AR-15 300 BLK 300 BLK 5" PISTOL HYBRID UPPER ASSEMBLY / SPITFIRE/ MLOK RAIL / Left Hand

300 Blackout

AR-15 300 BLK 5" Pistol Hybrid Upper Assembly / Spitfire Muzzle Brake / MLOK Rail / Left Hand Ejecting

Upgrade your AR-15 build with the AR-15 300 BLK 5" Pistol Hybrid Upper Assembly, featuring a Spitfire muzzle device and a 4" slim profile MLOK rail for improved accuracy and lightweight performance. This upper assembly is chambered in 300 Blackout and includes a 5" barrel made of 4150 CRMOV steel with a black nitride finish for enhanced durability and corrosion resistance. The 1:7 twist rate is optimized for stabilizing heavier projectiles. The micro gas system offers efficient gas flow for reliable cycling. This upper features a left-hand ejecting receiver and is perfect for building a compact and powerful pistol-style AR-15. The BCG and charging handle are not included and can be purchased separately.

Key Features:

• Chamber: 300 AAC Blackout (300 BLK)

• Barrel Material: 4150 CRMOV steel, black nitride finish for superior durability.

• Barrel Length: 5 inches for a compact pistol configuration.

• Twist Rate: 1:7, ideal for stabilizing heavier projectiles.

• Muzzle Thread: 5/8x34 for compatibility with various muzzle devices.

• Muzzle Device: Spitfire-style brake for improved recoil control and flash reduction.

• Handguard: 4" slim-profile MLOK rail for lightweight and modular attachment options.

• Gas System: Micro-length gas system for reliable cycling in a compact package.

• Receiver: Left-hand ejecting AR-15 billet aluminum receiver. Comes complete with forward assist and dust cover.

• Overall Length: 15" total length for a compact build.

• BCG & Charging Handle: Not included (can be purchased separately).

Specifications:

• Platform: AR-15

• Caliber: 300 Blackout (300 BLK)

• Barrel Material: 4150 CRMOV steel, black nitride finish

• Barrel Length: 5 inches

• Twist Rate: 1:7

• Muzzle Thread: 5/8x34

• Muzzle Device: Spitfire-style muzzle brake

• Gas System: Micro-length gas system

• Handguard: 4" slim-profile MLOK rail

• Receiver: Left-hand ejecting billet aluminum

• Overall Length: 15 inches

• Does Not Include: Bolt Carrier Group (BCG), Charging Handle (sold separately)