16″ 300 BLK Blackout Kit 10″ Quad Rail with 80% Lower

  • Description
  • Additional information
  • Reviews (5)


Complete 300 Blackout Rifle Kit WITH 80% Stripped Lower Receiver

16″ Heavy Barrel M4 Feed Ramp Phosphate 1×8 (Including 80 percent Stripped Lower Receiver)

Lower and Upper Are 7075 T-6 Aluminum
This rifle kit contains all Made In America components to complete YOUR 300BLK Blackout Rifle. The rifle kit comes WITH the 80 percent machined stripped AR lower receiver (Does not include Magazine, Jig/tooling or Sights).
  • Chamber – 300BLK Blackout
  • Barrel Twist – 1×8
  • Barrel Thread – 5/8×24
  • Barrel Steel – Heavy Barrel Chrome Moly / phosphate Processed
  • Flash Hider – A2 Flash Hider
  • Handguard – 10″ Free Float Aluminum Quad-rail
  • Gas Block -.750 Low Profile gas block, Pistol Gas Tube with Pin
  • Upper Receiver – M4 Flat-top Upper with Feed Ramps
  • Bolt Carrier Group – Mil-spec AR-15 Bolt/Carrier assembly
  • Charging Handle – Included
  • Lower Parts Kit – Mil-spec Lower Parts Kit
  • Stock – US Made 6 Position Black Stock w/ buffer and spring

This 300 BLK Blackout complete Rifle Kit is not an FFL (Federal Firearms liscense) Item because Some Machining still needed on 80% AR Stripped Lower Receiver

Additional information

Weight 13 lbs

Barrel Chamber

Barrel Length

Barrel Twist

Barrel Thread

Barrel Material

Barrel Gas Block


Handguard Length


Barrel Finish

Barrel Gas System


5 reviews for 16″ 300 BLK Blackout Kit 10″ Quad Rail with 80% Lower

  1. 4 out of 5

    Good nice

  2. 5 out of 5

    You guys have a good prices

  3. 5 out of 5

    It’s a great kit to build as a display or hunting very accurate and a great rifle.

  4. 5 out of 5

    Good stuff

  5. 3 out of 5

    (verified owner)

    I bought this kit almost a year ago, the kit was missing the pistol grip, otherwise it seemed to be pretty good, I finished out the lower receiver on my mill. I did have an issue that occasionally the rounds would not fire and the primer strikes were rather shallow, also the front edge of the buffer was getting beat up by the buffer retainer pin, the bolt wasn’t going completely into battery. I found on a few different websites that this is a fairly common issue with some lower receivers, the solution was to order an offset buffer retainer pin. I ordered an offset pin and installed and the issues are much better, but I still have the light strikes on the primers occasionally along with the occasional misfire, I just replaced the buffer supplied with a standard carbine H2 buffer that is a bit heavier buffer but have not been out to test it yet..you know lack of ammunition! I do have ammunition that I reload but I want to make sure it runs flawlessly with factory ammo before I can say it is my reloads are causing the issue, I have been reloading for almost 50 yrs and haven’t had misfire issues in many many years. Only thorough testing will tell!

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