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80% Arms sells AR-15 and .308 80% Lower Receivers, 80% Lower Jigs and other accessories which allow you to legally build a firearm at home in most states.
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We utilize state of the art 5-axis CNC machines to mill all our .308 and AR-15 80 percent lower receivers to incredibly precise tolerances using premium billet aluminum.
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We also offer our patented AR-15 and .308 Easy Jigs® which is the first 80% lower jig that makes it ridiculously easy for a non-machinist to finish their 80% lower.
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Products manufactured by 80% Arms carry a lifetime warranty against manufacturing defects. We will promptly replace or repair any product that we determine to be defective.

DPMS 10.5" 300AAC Blackout Quad-Rail Upper AR-15 80% Build Kit

$578.53
SKU:
DCBK-AR15-Q103
Shipping:
Calculated at Checkout

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This AR-15 80% build kit with billet 6061 80% lower contains all the necessary high-quality parts to build your AR-15 at home! This package helps remove all the guess work out of building a quality AR15.


Our Complete AR-15 80% Build Kit Features:

  • DPMS 10.5" 300AAC Blackout 9" Panther Quad Rail Upper
  • 80 Percent Arms Billet 6061 AR-15 80% Lower
  • DPMS Black Nitride 5.56 Bolt Carrier Group
  • DPMS Mil Spec AR-15 Charging Handle
  • SB Tactical SBA5 Brace
  • Smith Defense 3oz 6-Position Carbine Buffer Tube Kit
  • Smith Defense AR-15 Lower Parts Kit

About the kit:

  • Barrel length 10.5" 
  • 4150V Chrome Moly Vanadium Barrel 
  • Nitride Treated
  • 300 Blackout Chamber 1 in 8" twist 
  • M4 Feedramp
  • 9" Panther Quad Rail Handguard
  • Forged upper
  • Pistol-length gas system
  • BCG & Charging Handle Included

Barrel: 10.5" barrel length 4150V Chrome Moly Vanadium Steel. Chambered in 300 Blackout, with a 1/8 twist, and a pistol-length gas system. The barrel is finished off with a low profile gas block, a custom 9" quad rail handguard, and an A2 flash hider.

Upper: Forged 7075-T6 A3 AR upper is hard coat anodized black for durability. Featuring M4 feedramp cuts, these upper upper receivers are made for us right here in the USA.

Bolt Carrier Group: For AR15 and M16 rifles and carbines. Bolt is made of shot-peened, Mil-spec Carpenter 158® steel. Gas key is secured with grade 8 fasteners and staked. Includes Charging Handle.

Each upper is assembled to order with care, and test fired by DPMS. If there are any issues please contact DPMS as units are received sealed and sent out to customers sealed from DPMS.

Bolt carrier group and charging handle included.

Shipping Restrictions: This item is restricted from shipping to California, Connecticut, New Jersey, New York, Washington D.C, Washington, Hawaii, Colorado, Cities of Philadelphia - York - Reading Pennsylvania, Maryland, Massachusetts, Nevada, Illinois, and Rhode Island

Under California law, this product is or contains an unserialized “firearm precursor part” and cannot be sold into the State of California. 80% Arms cannot accept any orders of this product for shipment to the State of California, or to any customer who is a resident of the State of California.

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