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


Looking for a comprehensive AR-15 kit to kickstart your build? Our 16″ 300 BLK Blackout Kit with 10″ Quad Rail and 80% Lower has everything you need to get started. Crafted from durable 7075 T-6 aluminum with a black anodized finish, the upper and lower receivers ensure longevity and reliability.


AR15LPKT (+$47.95)

LBE Unlimited Lower Parts Kit

SLPK101 (+$56.89)

Spikes Tactical Mil-Spec Lower Parts Kit

g2-k421-d000-0p (+$29.95)

Anderson Manufacturing Mil-Spec LPK

g2-k421-a000-0p (+$34.95)


CMMG55CA6C5 (+$41.95)

CMMG Lower Parts Kit

CMC81503 (+$229.95)

CMC 3.5 lb. flat drop in trigger / cmc LPK

aprh100029c (+$39.95)

Aero Precision Mil-Spec Lower Parts Kit

SLPK301 (+$136.95)

Spike Tactical LPK /stainless Trigger, Hammer and Disconnect

Product price: $379.95
Total options:
Order total:


Complete 300 Blackout Rifle Kit WITH 80% Stripped Lower Receiver

Looking for a complete AR-15 kit that includes everything you need to get started? Check out our 16″ 300 BLK Blackout Kit with 10″ Quad Rail and 80% Lower. Also, this lower and upper receiver set’s machined from 7075 T-6 aluminum for durability and strength and features a black anodized finish. Additionally, the 80% lower receiver is machined and ready for final machining (jig/tooling not included), and the quad rail handguard provides plenty of space for accessories. Also, the Mil-spec AR-15 bolt/carrier assembly is perfect for any standard AR-15 build, and the included 6 position stock makes it easy to adjust the length of pull. Don’t forget, this kit also comes with a Mil-spec lower parts kit!

16″ 300 BLK Blackout Kit Features:

  • Chamber – 300BLK Blackout
  • Barrel Twist – 1×8
  • 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
  • Made in the USA
  • SKU: DT9-044

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

WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information: www.P65Warnings.ca.gov

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


Accessory Attachment Style


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

  1. 4 out of 5

    Hi g

    Good nice

  2. 5 out of 5

    Raul galvan

    You guys have a good prices

  3. 5 out of 5

    Randall D. PETTIE

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

  4. 5 out of 5

    Alex Roberts

    Good stuff

  5. 3 out of 5

    John (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!

Only logged in customers who have purchased this product may leave a review.