AR15 Rifle Kit with 80% Lower Receiver
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United Armory Rifle Kit with 80% AR-15 lower receiver. All that is left to do is machine the fire control pocket, for the trigger group and drill a few holes. Once complete you will be ready to assemble a functional AR-15 Rifle.


~ 80% AR-15 lower receiver Machined to Mil-Spec standards from 7075-T6 heat treated aircraft-grade aluminum forgings. Tumble deburred, bead blast finished and Mil 8625 Type III, Class 2 anodized. Broached magazine well. Our lowers have been found to be compatible with most jigs made for finishing Mil-Spec style lowers.

~ AR-15 Mil-Spec Buttstock assembly with Lower Receiver Extension / Buffer Tube machined from Billet T6 heat treated aluminum to Mil-Spec dimensions and specifications. Includes Buffer, Mil-Spec Spring, Castle Nut & End Plate.

~ AR-15 Lower Parts Kit with Enhanced Hammer & Trigger.

~ AR-15 A3 Flattop SPORT Upper Receiver with M4 Feed Ramps, forged from 7075 T6 heat treated aluminum, Black Hard Coat Anodized (Mil-A-8625A). DOES NOT have Forward Assist or Ejection Port Dust Cover Door Capabilities.

~ AR-15 16" M4 Carbine Barrel 5.56 1/7 Twist. Barrel Steel - 4140 Chrome Moly Steel. Barrel Finish - Black Nitride. Includes A2 Flash Hider.

~ AR-15 Steel Micro .750 Low Profile Gas Block with Pin & Set Screws. Includes Carbine Length Gas Tube.

~ Free Float 9" Rail Handguard System Machined in the USA from 6061 T6 Aluminum, Class III type 2 hard anodized, with 1913 Picatiny Quad Rails,Laser Engraved T-markings. Includes Larger 6061 T6 Aluminum Barrel Nut, Spanner Ring & Set Screws.

~ AR15 / M16 Auto Bolt Carrier Group MPI

~ AR-15 Charging Handle machined to Mil-spec standards, Anodized Black with Latch.

~ The Lower Receiver still requires machining in order to have an operational firearm.

~ Complete AR-15 Rifle Kit must be assembled, including lower and upper.

~ NO FFL is required for purchase, item can be shipped directly to your home.

~ As determined by the firearms technology branch of the ATF, this lower receiver is not classified as a “firearm” as defined by the GCA of 1968.

~ Customer is responsible for compliance with local state and federal regulations regarding any products sold on our website.

  • Item #: AR15-80RK

AR-15 RIFLE KIT with 80% Forged Lower Receiver - Anodized BLACK

Price: $695.00
Availability: Out-of-Stock
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