AR15 Pistol Kit - .300 AAC Blackout (10.5" Nitride Barrel, 1:8 Twist & 9" Slanted M-Lok Handguard) with Fire/Safe Marked 80% Lower

Check out another of the new additions to our line of .300 AAC blackout AR pistol builds.  This one gives you a 10.5" nitride-coated barrel with a 1:8 twist rate, and a 9" slanted free floating M-Lok handguard.

Like some of our other .300BLK pistol build kits, this sucker has a 10.5" barrel, which is a near-optimal length to maximize the performance of the .300BLK cartridge.  It's short enough that it'll work amazingly with a suppressor (after you check your local laws and go through all the proper procedures, of course), but not so short that you choke off its ballistic potential.

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.