300 Blackout AR-15 Pistol Upper Assembly (8.5" Nitride Barrel & 7" M-Lok Handguard) 1:7 Twist



Get the best of both worlds when it comes to 300 Blackout. This 8.5” AR-15 pistol upper will produce nearly the same accuracy in .300 BLK as the typical 5.56 round, while affording 5% more energy up to 440 meters. The 1:7 twist rate and pistol gas system allow you to quickly switch between supersonic and subsonic loads. 5/8-24 muzzle threads make throwing on your favorite suppressor a breeze.

This hyper-accurate 4150V barrel features a nitride finish, offering increased barrel life and protection against fouling and corrosion. Nitride barrels boast the same benefits as a chrome-lined barrel, while providing better accuracy! This upper ships test-fired and ready for the range, backed by a Lifetime Warranty. Includes Full-Auto (M16) BCG with charging handle.

Barrel Features & Specs:

  • Barrel Length: 8.5″
  • Gas System: Pistol Length
  • Barrel Profile: Heavy
  • Barrel Steel: 4150V
  • Barrel Finish: Nitride
  • Chrome Lining: None
  • Muzzle Thread: 5/8-24
  • Chamber: 300 Blackout
  • Twist Rate: 1:7
  • Barrel Extension: M4
  • Diameter at Gas Block: .750
  • Gas Block Type: Low-Profile
  • Muzzle Device: A2 Style Flash Hider

Receiver Features & Specs:

  • Receiver Material: Forged 7075 T6
  • Receiver Type: Flattop M4
  • Handguard Type: 7″ Lightweight M-Lok Free Float Rail
  • Bolt Carrier Group Included: Yes
  • Bolt Steel: Carpenter 158 Steel
  • Bolt Carrier Profile: Full-Auto (M16)
  • Charging Handle Included: Yes
No FFL required  Made in the USA  Lifetime Warranty

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