This 7.5” 300 Blackout AR Pistol Kit is perfect for completing the ultimate whisper-quiet 300 BLK pistol build. The 4150 CMV barrel was cold-forged and features a superior nitride finish, guaranteeing better accuracy that chrome lining and longer barrel life, too. The lower parts kit features an Enhanced Polished Trigger for better accuracy, a 5-stop SBA3 Adjustable Pistol Brace, and a mil-spec buffer system with carbine buffer.
The ultra-light M-Lok handguard provides plenty of rail estate while offering maneuverability and comfort. The upper ships test-fired and assembled so you can hit the range right away. Optionally, select your 80% lower of choice (forged or billet) at checkout to complete the kit!
300 Blackout Pistol Kit Specs:
Upper Receiver Type: Forged Standard
Upper Receiver Material: 7075 T6 Aluminum
Upper Receiver Coating: Hardcoat Anodized
Muzzle Device: Fluted Flash Can
Barrel Caliber: 300 Blackout
Barrel Profile: Heavy
Barrel Material: 4150 Chromoly Vanadium
Barrel Length: 7.5″
Barrel Thread Pitch: 5/8 x 24
Barrel Twist Ratio: 1:7
Barrel Finish: Nitride
Barrel Lining: Nitride
Gas Block Size: .750
Gas Block Type: Low Profile
Gas System: Pistol
Handguard Length: 9″
Handguard Type: M-LOK
Handguard Color: Black
Rail Profile: Lightweight
BCG Caliber: 5.56
BCG Profile: Full Auto
BCG Finish: Phosphate
BCG Testing: MP
BCG Logo: None
BCG Bolt Type: Carpenter 158
Charging Handle: 7075 T6 Aluminum
300 Blackout Pistol Kit Features:
- Includes all parts needed to complete your build
- Requires no FFL, not considered a firearm
- Pre-built upper ships ready to fire
- Ships straight to your front door
- Proudly built in the USA
- Backed by Lifetime Warranty
300 Blackout Pistol Kit Details:
Barrel: Nitride-coated, 7.5”, chambered in .300 AAC Blackout. Made of 4150 Chromoly Vanadium. Features 1:7 twist rate, M4 barrel extension, and pistol-length gas system. Includes 9″ lightweight M-Lok free-float rail, .750″ diameter low profile gas block, and fluted flash can.
Upper: Mil-spec, made of forged 7075 T6 aluminum. Hard-coat anodized (Type III). Features M4 feed ramps.
Bolt: Mil-spec, shot-peened, made of Carpenter 158 steel. Gas key secured with Grade 8 fasteners, staked per mil-spec. Parkerized exterior, chrome-lined interior.
80% Lower: Pick an optional forged or billet 80% lower. All lowers include mil-spec fittings and hard-coat anodizing.
Lower Parts Kit: Includes complete, mil-spec AR-15 parts kit. Features Enhanced Polished Trigger (EPT).
Charging handle: Standard 7075 Forged charging handle.
Please note: If completing your AR Pistol Kit using the optional 80% lower, please select an 80 lower jig from our available options.
Shipping of various parts and/or accessories are prohibited to states and locales (ie New Jersey, California, New York, etc…) with restrictions against certain parts and/or accessories or “assault weapons” (i.e. states with high-capacity magazine restrictions, manufacturing of semi-automatic weapons, etc..). It is your responsibility to be aware of your local firearms laws before purchasing from our website or machining a firearm. We try our best to keep our shipping page current, but laws change daily
80-Lower.com only ships within the United States. Federal legislation dictates we cannot ship our products internationally.