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: 5/8x24
- 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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