Description
We’re excited to introduce this heavy-duty 300 Blackout AR 15 Pistol Kit. Featuring an 8.5” nitride barrel, 7” lightweight M-Lok handguard, and mil-spec parts, this kit affords the perfect configuration for reliably shooting supers and subs, with or without a suppressor. A rugged 4150 barrel provides MOA accuracy and cycles all 300 BLK loads via pistol gas. A 1:7 twist rate allows for accurate shot groups with either heavy (220-grain) or light (110-grain) loads. Standard 5/8-24 thread fittings making installing your favorite can a breeze, no modification necessary.
What’s Included
This kit is not a firearm. It includes an assembled upper receiver, bolt carrier group, lower parts kit, and buffer assembly with pistol brace. It does not include the component to make a firearm: A stripped lower receiver. Pair this rifle kit with an AR-15 80% lower receiver and AR-15 jig to fabricate a receiver, sold separately.
Here's the beginner's guide to 80% lowers.
300 BLK AR Pistol Kit Specs
Barreled uppers are assembled in-house before shipment.
Barrel
- Chamber: .300 AAC Blackout
- Contour: Heavy
- Length: 8.5”
- Twist Rate: 1:7
- Gas System: Pistol
- Gas Port: 0.750”
- Muzzle Threads: 5/8x24
- Feed Ramps: .30-Cal
- Material: 4150 CMV
- Finish: QPQ Nitride
- Process: Button Rifled
- Lining: QPQ Nitride
- Muzzle: A2 “Birdcage” Flash Hider
Handguard
- Attachment System: 7" Lightweight M-Lok
- Finish: Type III Hardcoat Anodized (Mil-Spec)
- Top Rail: M1913 Picatinny
- Material: Billet 6061-T6 Aluminum
- Attachment: Barrel Nut
Stripped Upper Receiver
- Profile: M4 Flattop
- Material: Forged 7075-T6 Aluminum
- Finish: Type III Hardcoat Anodized (Mil-Spec)
Bolt Carrier Group
- Profile: M16/Full-Auto
- Steel: Carpenter No. 158 (Mil-Spec)
- Exterior: Phosphate Coating
- Interior: Chrome-Lined
- Gas Key: Staked, Chromed
- Charging Handle: Included
Lower Receiver Parts
- Buffer System: Mil-spec, Carbine
- Pistol Brace: SB Tactical SBA3
- Parts Kit: Mil-spec, single-stage
Receiver sold separately
No FFL or serialization is required to fabricate a receiver under federal law. However, state laws vary. Some states require serialization or have banned 80% lowers and gun-making kits. We encourage each and every builder to perform their own research about the state and federal laws that apply to them.
Shipping Restrictions
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.
