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300-blackoutupper-com: 80% Lowers, Jigs, Build Kits & More! – 80 Lower Jig

AR-15 Build Kit – 300 Blackout (Keymod Handguard & 16″ Barrel) with Fire/Safe Engraved 80% Lower Receiver

$799.95 $699.95 (You Save $100.00)

AR-15 Build Kit - 300 Blackout (Keymod Handguard & 16" Barrel) with Fire/Safe Engraved  80% Lower Receiver
AR-15 Build Kit - 300 Blackout (Keymod Handguard & 16" Barrel) with Fire/Safe Engraved  80% Lower Receiver

Out of stock

Out of stock

Free Shipping on all orders $325+!




This 300 Blackout AR-15 Build Kit is perfect for a quick and easy weapon build, that any and every level of experience operator and easily complete in a weekend, or even a single day! This AR-15 Build Kit comes fully stocked with a 16” Mid-length Chrome Moly Vanadium, .300 AAC Blackout chambered barrel, a FIRE/SAFE engraved 80% lower receiver 7075-T6 aluminum forging and is already anodized which will match seamlessly with the 300 Blackout upper assembly. This AR-15 Build Kit is noteworthy because of this upgraded Blackout Upper is an easy addition to your weapon and only requires to snap in 2 takedown pins for installation! Making this an incredibly easy and quick build for any AR-15 operator.


  • Barrel –Mid-length Chrome Moly Vanadium 16” barrel, 1:8” Twist Rate, Chambered 300 AAC Blackout (installed & included)
  • Upper Receiver – 7075 Forged Aluminum (installed & included)
  • Free Float Rail – 13” Keymod Free Float Rail (installed & included)
  • Bolt Carrier Group (installed & included)
  • Low Profile Gas Block (installed & included)
  • Gas Tube (installed & included)
  • A2 Flash Suppressor (installed & included)
  • Charging Handle (installed & included)
  • AR-15 Lower Parts Kit (included)
  • Butt Stock & Buffer Tube Assembly (included)
  • 80% Lower Receiver – Mil-Spec 7075 Forged Aluminum with Fire/Safe Engravings (included)


Barrel: Chrome Moly Vanadium Barrel. The 300 Blackout chambered barrel, made from chrome moly vanadium, is finished off with a .750″ low-profile gas block.

Upper Receiver Assembly: Upper Receiver is manufactured from 7075 – T6 forged aluminum and for increased durability hard coat anodized. This receiver includes T-marks and M4 feed ramp cuts. Manufactured in the USA!

Bolt Carrier Group: This 8620 steel bolt is mil-spec shot peened and chrome lined phosphate-coated. Carpenter 158 steel bolt carrier is complete with an extractor spring and O-ring insert. Each BCG is high pressure tested to ensure quality. This M-16 style bolt carrier comes ready for each and every one of your rounds!

80% Lower Receiver: This 80% Lower Receiver comes with FIRE/SAFE Engraved for your safety selector. This forged 80% lower was manufactured using high quality 7075-T6 aluminum and is hard coat anodized mil-spec black to match the upper receiver assembly perfectly. The 80% lower is ready for the machining of the trigger pocket, trigger pins, and safety selector.

Lower Parts Kit: This lower parts kit is complete with all of the internal parts required for you to complete your lower receiver. From pivot pin to the trigger, to a MagPul MOE pistol grip.

Butt Stock Assembly: A Magpul MOE Carbine stock offers comfort like no other with extra padding added to the butt stock and to finish it off a Palmetto State Armory mil-spec buffer tube.

Charging Handle: Manufactured from T6061 aluminum, this charging handle is extremely tough and dependable even in the most extreme conditions

Please note: This AR-15 Build Kit does require that the builder completes the 80% lower receiver themselves, but don’t worry that’s the fun part. It is also your only way to stay off the grid, build your own AR-15 without the need of an FFL transfer or serialization.

Yeah, it’s that easy – an all-in-one AR-15 Build Kit. It’s as easy as 1,2,3.

1. Open your box

2. Finish / complete your 80% lower receiver

3. Assemble your rifle

Note: The ATF/FTB states that this 80% lower receiver is not classified as a firearm as defined in 18 U.S.C. 921(a)(3).

no-ffl-required.jpg made-in-the-usa.jpglifetime-warranty.jpg

AR-15 Build Kit – 300 Blackout (Keymod Handguard & 16″ Barrel) with Fire/Safe Engraved 80% Lower Receiver

$799.95 $699.95 (You Save $100.00)

Out of stock

Out of stock

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Free Shipping on all orders $325+!


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