.300 Blackout AR 15 Pistol Upper Assembly – 7.5″ Parkerized Heavy Barrel, 1:8 Twist Rate with 6.5″ MLOK Handguard

Designed for maximizing subsonic accuracy.
With a heavy-profiled 7.5″ barrel featuring a 1:8 twist rate, this 300 BLK AR upper’s the perfect solution for maximizing stability and accuracy with all subsonic 300 Blackout loads. It’s paired with a quality, custom-cut, billet upper receiver featuring an upgraded side-charging bolt carrier assembly. Includes a lightweight, free-float, M-LOK rail for accessories.
What’s Included
This is not a firearm. It includes an assembled upper receiver, bolt carrier group, and charging handle. 
300 BLK Pistol Upper Assembly Specs
Barreled uppers are assembled in-house before shipment.
Barrel

Chamber: .300 AAC Blackout
Contour: Heavy
Length: 7.5″
Twist Rate: 1:8
Gas System: Pistol
Gas Block: 0.750″
Muzzle Threads: 5/8×24
Feed Ramps: .30 Cal
Material: 4150 CMV
Finish: Parkerized
Process: Button Rifled
Lining: None
Extension: M4
Muzzle: Fluted Flash Hider

Handguard

Attachment System: 6.5″ M-LOK
Finish: Type III Hardcoat Anodized (Mil-Spec)
Top Rail: M1913 Picatinny
Material: Billet 6061-T6 Aluminum
Attachment: Barrel Nut 

Upper Receiver

Profile: M4 Flattop
Material: Billet 6061-T6 Aluminum
Finish: Type III Hardcoat Anodized (Mil-Spec)

Bolt Carrier Group

Profile: M16/Full-Auto
Steel: AISI E9310
Exterior: Black Nitride
Interior: Black Nitride
Gas Key: Staked
Charging Handle: Included, Right Side Charging

Lower receiver assembly sold separately. 

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