BUILD AT HOME

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.

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.

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.

100% SATISFACTION GUARANTEED

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.

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CMMG .308 Lower Parts Build Kit

out of stock out of stock

CMMG .308 Lower Parts Build Kit

$44.95

Quantity

SKU:: 38CA61A
UPC:: 8.15835E+11
Shipping:: Calculated at Checkout

SOLD OUT

CMMG's Builders kit includes most of the necessary parts to build up your lower group except the commonly upgraded parts. Made in USA

Does not include Trigger Guard, Fire Control Group, and pistol grip.

Looking for an upgrade? Check out the Smith Defense Mil Spec LPK!

**Please note that we recommend buying the AERO Precision 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.