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

Ready for a suppressor with maximum subsonic accuracy.
Nothing feels better than putting together a new AR, sending some rounds downrange, and ringing steel – especially with a suppressor muffling subsonics. That’s exactly what this 300 BLK AR pistol kit is intended to do: Its 7.5″ heavy barrel, featuring a 1:8 twist rate and pistol gas system, is ready to reliably and accurately cycle both supersonics and subsonics, with or without a suppressor, providing tight groupings that are whisper-quiet.
What’s Included
This is not a firearm. It includes an assembled upper receiver, bolt carrier group, charging handle, lower parts kit, and buffer system.
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 Parts
Buffer System: AR-15
Pistol Brace: SBA3 5-Position
Parts Kit: Mil-Spec LPK
Lower receiver assembly sold separately.