Lifetime Warranty Lifetime Warranty Made in the USA Made in the USA FREE Shipping on $325+ Free Shipping on all orders $325+!
80% L❂WERS

300 Blackout AR 15 Rifle Kit (16″ Nitride Barrel & Fixed Front Site) w/ 80% Lower

$650.00 $374.99 (You Save $275.01)

300 Blackout Freedom Build Kit (16" Barrel and Fixed Front Site) with AR15 Fire/Safe 80% Lower
Save For Later
Save For Later

Use coupon code:

Click To Copy

Free Shipping on all orders $325+!

SKU: 516447001_AR2180-BAL-KIT


300 Blackout Freedom Build Kit with AR15 Fire/Safe 80% Lower

Building a tried and true M4 platform, a perfect clone of the venerable USGI rifle has never been easier or more affordable. 

At just over $500, this kit gets you everything you’d find on a military-issue M4: Polished feed ramps, an M16 bolt carrier group with a Carpenter 158 bolt, government profile, chrome moly barrel, A2 front sight post with pistol length pre-installed gas system, A2 birdcage flash hider, forged upper receiver, and a mil-spec phosphate hard coat finish.

A mil-spec lower parts kit accompanies a six-position buttstock and carbine buffer system and a quality 80% lower, everything needed to finish your at-home build! This kit is 100% legal to ship straight to your front door, no FFL transfer or paperwork needed. Nothing in this kit is considered a firearm by any state or federal law. If you were looking for the most affordable way to build a quality M4 platform rifle, you’ve found it.


Gas System: Carbine-length
Barrel Profile: M4
Barrel Steel: Chrome moly vanadium
Barrel Finish: Black nitride
Chrome Lining: No
Muzzle Thread: 1/2×28
Chamber: .300 AAC Blackout
Twist Rate: 1:7
Barrel Extension: M4
Gas Block Size: .750″
Gas Block Type: Low-profile
Muzzle Device: A2 Flash hider
Receiver Material: Forged 7075 T6
Receiver Type: M4
Handguard Type: CAR-style fixed
Bolt Carrier Group Included: Yes
Bolt Steel: 9310 steel, magnetic particle inspected
Bolt Carrier Profile: Full-auto
Charging Handle Included: Yes
Overall Length: 24.5″

Benefits of the 16” Carbine-Length Black-Barreled AR 15 Rifle Kit:

  • 100% legal to own and ship to your front door
  • Not considered a firearm – no FFL paperwork needed!
  • Chrome moly vanadium steel barrel and Freedom parts kit ensure sub-MOA accuracy
  • Prebuilt upper with gas system removes the guesswork of rifle making
  • Includes bolt carrier group, free-floated M-Lok handguard and lower parts kit

AR 15 Rifle Kit Details (Expanded):

Barrel: 16″ carbine-length with black nitride finish, chambered in .300 AAC Blackout, 1:7 twist rate, .750″ low-profile gas block, CAR-style/M4-style fixed handguard, with an A2 “birdcage” flash hider.

Upper Receiver Assembly: Forged from 7075 T6 aluminum, hard-coat anodized in black for durability, features M4 feed ramps, and are made in the USA.

Bolt Carrier Group: The bolt carrier is made from 9310 steel and has a staked gas key and black nitride finish. The bolt itself comes complete with an extractor spring and O-ring insert.  It accepts .223 Wylde, 5.56mm, and .300BLK calibers (though you should NEVER attempt to use a caliber for which your rifle is not chambered), and is magnetic particle inspected.

80% Lower Receiver: Choose to receive a forged or billet Fire/Safe 80% lower receiver.  Our lower receivers are anodized to match the upper receiver perfectly. and they come ready for machining of the trigger pocket and drilling of the safety selector and trigger pin holes.

AR-15 Lower Parts Kit: includes all parts needed to complete the lower receiver including pistol grip, mil-spec safety selector, and trigger/fire control group.

Lower Assembly: comes with complete buffer tube assembly including buffer, buffer spring, six-position buffer tube, latch plate, castle nut, and butt stock based on original Colt design.

Charging Handle: standard size, made from 6061 aluminum.

Please note: This build kit requires that the builder complete the 80% lower receiver themselves, but that’s the rewarding part of the experience (and the only way to build your own AR-15 without the need of an FFL transfer or serialization).


No FFL required Made in the USA Lifetime Warranty

300 Blackout AR 15 Rifle Kit (16″ Nitride Barrel & Fixed Front Site) w/ 80% Lower

$650.00 $374.99 (You Save $275.01)

In stock

$650.00 $299.99 (You Save $350.01 )
Save For Later
Save For Later

Use coupon code:

Click To Copy

Free Shipping on all orders $325+!

Customer Reviews

4.8 Based on 4 Reviews
5 ★
4 ★
3 ★
2 ★
1 ★
Write a Review Ask a Question
  • Reviews
  • Questions

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

    Dion R.

    great kit.turned out awesome.couldn't ask for anything else....

    works flawlessly.went together like it should....

    John C.

    Great quality and easy to build!

    The Kit was perfect and well made. Shot straight and true out the box! Also bought a 5.56 barrel and it fit perfectly on the lower so now I have basically two rifles! I bought the Easy Jig Gen 2 and it was so easy to use. Just make sure you check your bit tightness in the router frequently. Mine came loose and I almost messed up the lower. instructions we easy to read.I just wish there had been instructions with the build kit but they were easy enough to find online. There was a slight delay in shipping but they were true to their word and took care of me very well. Very Happy!


    Easy Process, Great Results

    Just finished building the .300 Blackout kit. This was my first experience building a 80% receiver, I might be hooked! The only things that would've made it excellent, instead of good, would be an unmarked lower option. (I purchased a separate unmarked receiver, which they were happy to discount, because I intended to have custom engravings for safe/fire.) that and a very long Christmas backorder were the only things that were less than perfect. The milling, building, shooting experiences were all extremely satisfying. Still smiling about it now.

    Samuel C.

    My very first rifle build! Couldnt dream of better!

    I have had the most amazing experience with this kit. I have worked in machine shops on CNC lathes and Mills. I milled out my lower with a manual mill, and it is breathtaking, its much nicer than any lower ive seen finished from ghost gunners jigs or any other way, it has gone together so flawlessly and i cant wait to pit lead down range! I will share a picture doing so. It has made medecide tk build a 556 next, then an AR9! Amazing!


    Sign-up for exclusive discounts, new product releases and updates from

    100% Satisfaction

    Customer Service is our passion and we are here to answer any questions you have.

    Shop With PRIDE

    Shop With Confidence

    Secure Payment

    Left Menu IconMENU
    Right Menu Icon