The .300 AAC blackout caliber has proven to be more than just the newest trend or the flavor of the month. The fact that some law enforcement agencies use it is a sign that it's caught on in a big way. This is most likely due to its excellent stopping power at close-to-intermediate ranges. That's why we're introducing several new AR pistol build kits chambered in .300BLK. This one comes with an 10.5" nitride-coated barrel with a 9" lightweight M-Lok handguard. You also get a lower parts kit whose grip has been upgraded to the Magpul MOE grip, complete buffer tube assembly with a pistol brace by SB Tactical, and your choice of one of our forged or billet 80% lower receivers.
300 Blackout Pistol Kit Specs:
Barrel Length: 10.5"
Barrel Profile: A2
Barrel Steel: 4150 Chromoly Vanadium
Barrel Finish: Nitride
Chrome Lining: No
Muzzle Thread: 5/8-24
Chamber: 300 AAC Blackout
Twist Rate: 1:8
Barrel Extension: M4
Diameter at Gas Block: .750
Gas Block Type: Low-profile
Muzzle Device: A2 Style Flash Hider
Receiver Material: Forged 7075 T6
Receiver Type: A3
Handguard Type: Lightweight M-Lok 9" Free Float Rail
Bolt Carrier Group Included: Yes
Bolt Steel: Carpenter 158
Bolt Carrier Profile: Full-auto
Charging Handle Included: Yes
Overall Length: 19.5"
300 Blackout Pistol Kit Features:
- Complete AR pistol-in-a-box (w/ 80% lower)
- No FFL required, kit isn’t considered a firearm
- Upper ships pre-built and test-fired for quality
- Optional mil-spec forged or billet 80% lower
- Includes enhanced polished trigger assembly
- Ships straight to your front door
- Backed by Lifetime Warranty
- Proudly made in the U.S.A.
300 Blackout Pistol Kit Details:
Barrel: Nitride-coated, 10.5”, chambered in 300 Blackout. Made of 4150 Chromoly Vanadium. Features 1:8 twist rate, M4 barrel extension, and pistol-length gas system. Includes 9" Lightweight M-Lok free-float handguard, .750" diameter low profile gas block, and A2 flash hider.
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 MOE trigger guard and 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.