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5.56 Ultimate AR 15 Rifle Kit (16″ Nitride Barrel & 12″ M-Lok Handguard) w/ 80 Lower


Ultimate AR 15 Rifle Kit (5.56 16" Nitride & M-LOK Handguard)
Ultimate AR 15 Rifle Kit (5.56 16" Nitride & M-LOK Handguard)
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SKU: 7792905-Ultimate-5D


So you want to build yourself an AR-15 from scratch starting with one of our 80% lower receivers.  You want the same quality and service we’re known for, but you don’t want the run-of-the-mill variety.  You want something with a little more attitude.  That’s why you need our Ultimate AR-15 Rifle Kit.  It’s got that all black no-nonsense look to it like some of our other kits but with the sleek 12″ M-Lok free float handguard.

You want to go to the range to put in some trigger time, and this rifle wants to get you there.  Plus, its barrel is chambered in .223 Wylde, so it doesn’t matter if you use your local gun range’s craptastic .223 plinking ammo or bring your own 5.56mm NATO to put a little more serious work in.  And now, our ultimate kit includes your choice of either the Easy Jig Gen 2 Multi-Platform with Tooling or the 5D Tactical Route Jig PRO with Tooling.  So what are you waiting for?  Grab this kit for yourself and get serious about your shooting.


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: .223 Wylde (accepts both .223 and 5.56mm)
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: 12” lightweight M-Lok free float
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″

Premium Accessories:

  • Magpul MBus Front & Rear Flip-up Sights
  • Magpul Angled Foregrip
  • Magpul Premium Pistol Grip
  • Magpul Enhanced Trigger Guard
  • Mil-Spec Buffer Tube and Stock Kit
  • Tactical Rifle Sling (black)
  • Rugged Tactical Rifle Case (with customizable foam inserts)

Tools to Get the Job Done

  • Easy Jig Gen 2 Multi-Platform or 5D Tactical Router Jig PRO (80% Lower Jig)
  • Easy Jig Gen 2 Tooling or 5D Tactical Router Jig PRO Tooling Set C (end mill & drill bits)
  • Armorer’s Wrench
  • Pin Punch Set
  • Porter Cable PCE 6430 Router

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 .223 Wylde, 1:7 twist rate, .750″ low-profile gas block, 12” free-float M-Lok 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

5.56 Ultimate AR 15 Rifle Kit (16″ Nitride Barrel & 12″ M-Lok Handguard) w/ 80 Lower


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    The overall experience was fantastic. Coming from a person who has never built anything more detailed that a dinning room table. Took my time and completed the build in about 3 hours. Went to the range and not 1 misfire. Very very satisfied.


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