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AR15 Pistol Kit – .300 AAC Blackout (7.5″ Phosphate Barrel, 1:8 Twist & 7″ Slanted M-Lok Handguard) with Fire/Safe Marked 80% Lower

$747.99 $625.00 (You Save $122.99)

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If you’re ready to build a bomb-proof cannon out of an AR-15, look no further: This 300 Blackout Pistol Kit sports a 7.5″ heavy barrel, cold-hammer forged from mil-spec 4150V gun steel. A pistol length gas system will reliably sling light or heavy .300 BLK loads at whatever target gets in your way. Rounding out the business end is a full-auto M16 BCG and forged M4 upper, providing loads of rail estate for your favorite optic, reflex, or irons.

This upper also comes with a 7″ slanted free float M-Lok handguard, so you can mount a light or your favorite accessories. The included Lower Parts Kit features an enhanced, polished trigger for even better groupings and follow-up. Pair with an optional billet or forged 80% lower and jig, and you can complete this build kit in a single afternoon! This build kit is backed by a Lifetime Warranty. Upper ships built and test-fired.

300 Blackout Pistol Kit Specs:

Barrel Length: 7.5″
Gas System: Pistol Length
Barrel Profile: Heavy
Barrel Steel: 4150V 
Barrel Finish: Phosphate
Chrome Lining: None
Muzzle Thread: 5/8-24
Chamber: 300 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: M4
Handguard Type: 7″ Lightweight M-Lok Free Float Rail
Bolt Carrier Group Included: Yes
Bolt Steel: Carpenter 158
Bolt Carrier Profile: Full-Auto
Charging Handle Included: Yes
Overall Length: 17″

300 Blackout Pistol Kit Features:

  • Includes everything you need to complete your build
  • Ships to your front door with no FFL or paperwork
  • Heavy barrel and EPT Parts Kit provide sub-MOA accuracy
  • Pre-built upper removes the guesswork of assembly
  • Made in the U.S.A., backed by a Lifetime Warranty

300 Blackout Pistol Kit Details:

Barrel: Phosphate-coated, 7.5”, chambered in .300 AAC Blackout. Features 1:8 twist rate, M4 barrel extension, and pistol-length gas system. Includes 7″ lightweight M-Lok free-float rail, .750″ diameter low profile gas block, and an 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: Includes an optional forged or billet 80% lower. Each lower features a mil-spec, hard-coat anodized finish and mil-spec fittings.

Lower Parts Kit: Includes complete, mil-spec AR-15 parts kit. Features Enhanced Polished Trigger (EPT).

Charging handle: Standard handle.

Please note: If completing your AR Pistol Kit using the optional 80% lower, please select an 80 lower jig from our available options.

No FFL required Made in the USA Lifetime Warranty

Shipping Restrictions only ships within the United States. Federal legislation dictates we cannot ship our products internationally. 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 (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.
We try our best to keep our shipping page current, but laws change daily. 

AR15 Pistol Kit – .300 AAC Blackout (7.5″ Phosphate Barrel, 1:8 Twist & 7″ Slanted M-Lok Handguard) with Fire/Safe Marked 80% Lower

$747.99 $625.00 (You Save $122.99)

$669.99 $575.00 (You Save $94.99 )
Save For Later
Save For Later

Free Shipping on all orders $250+!


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