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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.
cc-gun-icon INCREDIBLY PRECISE
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.
cc-hand-icon RIDICULOUSLY EASY
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 in under 1 hour with no drill press required.
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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.

Aero Precision Complete 16" AR-15 80% Build Kit

$1,149.99
SKU:
ACBK-AR15
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! We removed all the guesswork and packaged the necessary parts to build what we believe is the highest quality 80% AR-15 lower. 


Our Complete AR-15 80% Build Kit Features:

  • M4E1 15" ATLAS R-ONE M-LOK HG
  • 80 Percent Arms Billet 6061 AR-15 80% Lower
  • Aero Precision Black Nitride 5.56 Bolt Carrier Group
  • Aero Precision AR-15 Charging Handle
  • Magpul CTR Stock
  • Smith Defense 3.5oz 6-Position Carbine Buffer Tube Kit
  • Smith Defense AR-15 Lower Parts Kit

About the kit:

Barrel

  • 5.56 Nato 16" Barrel, 1/7 twist, 4150 CrMoV, QPQ, gas port drilled
  • .750 gas block journal
  • Mid-Length Gas System
  • M4 Feed Ramp Extension
  • HP and MPI tested
  • Standard A2 flash hider

M4E1 Upper Receiver

  • Forged from 7075 T6 aluminum
  • Precision machined to M4E1 specs
  • M4 feedramps
  • Matte black hard coat anodized Mil 8625 Type 3 Class 2
  • Laser engraved T-marks
  • Comes assembled, with port door and forward assist installed
  • Accepts standard AR15/M16 components
  • Handguard mounting platform is forged into the receiver
  • Works with Aero Precision handguards but also fits most BAR-system handguards
  • Barrel nut and wrench are included

Atlas R-One Handguard 

  • Full top picatinny rail for optional attachments
  • Quick disconnect sling socket at the 3, 6 and 9 o'clock positions
  • 1.3" Inside diameter
  • 1.5" Outside diameter
  • Compatible with mil-spec AR15 upper receivers and barrels
  • MLOK attachment points

Can't decide between the AR-9 or AR-15? Let us help you.

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, 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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