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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 18" AR .308 80% Build Kit

Aero Precision Complete 18" AR .308 80% Build Kit

$1,226.99
SKU:
ACBK-308
Shipping:
Calculated at Checkout
Description

This 80% AR-308 kit contains all of the necessary high-quality parts to build your AR-308 rifle at home! We removed all the guesswork and packaged the necessary parts to build your AR-308 Pistol in one, easy to purchase, complete AR-10 build kit. Buying an AR-308 complete build kit saves money and guarantees part compatibility. Many .308 components are not standardized across the industry, leaving much of the trial and error up to the end user. With our AR-308 complete build kit, all of the parts are guaranteed to match in both fit and function. 


Our Complete 308 80% Build Kit Features:

  • Upper Receiver: Aero Precision M5E1 Complete Upper, 18" .308 Rifle Barrel, 15" Enhanced Handguard - Anodized Black

  • Bolt Carrier Group: Aero Precision Black Nitride .308/7.62 x 51mm NATO Bolt Carrier Group

  • Charging Handle: Aero Precision .308 Charging Handle

  • Buffer Tube Kit: Smith Defense .308 Six-Position Buffer Tube Kit

  • 80% Lower: 80 Percent Arms Billet 6061-T6 AR-308 80% Lower Receiver, FIRE/SAFE Engraved

  • Lower Parts Kit: Smith Defense AR-308 Lower Parts Kit

  • Stock: Magpul STR stock Black

 

About the kit:

Barrel

18" .308 CMV BARREL FEATURES:

  • Twist: 1 in 10
  • Threading: 5/8 x 24
  • Material: 4150 Chrome Moly Vanadium Steel
  • Finish: QPQ corrosion resistant finish both inside and out
  • Gas Block Journal: .750
  • Gast Port: .089
  • Gas System Length: Rifle
  • Weight: 56.64oz
  • DPMS Barrel Extension
  • HP and MPI Tested

M5E1 UPPER FEATURES:

  • Forged from 7075 T6 aluminum
  • Precision machined to our specs
  • M4 feedramps
  • Laser engraved T-marks (Anodized only)
  • .2795” takedown pin holes
  • Accepts standard AR .308 components
  • Comes with forward assist and port door installed
  • Handguard mounting platform is forged into the receiver

GEN 2 ENHANCED HANDGUARD FEATURES:

  • 1pc free float design
  • Built in anti-rotation tabs
  • Scalloped rails
  • Continuous top rail
  • 1.78" inside diameter fits most muzzle devices and 1.5" suppressors
  • Compatible with low profile gas blocks
  • Gen 2 Feature - Quick disconnect sling socket at the 3, 6 and 9 o'clock positions
  • Gen 2 Feature - Additional milling along flats to aid with gripping and add visual appeal
  • Gen 2 Feature - New profile for the continuous picatinny top rail
 
 
 
**Please note that we recommend buying the Extended Mag Catch Button for .308 as it is not included in the kit. The button is a drop in replacement for the standard lower receiver magazine catch button. This extended button is longer, allowing it to protrude the proper distance when used with our lower. 
 
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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