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.
**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.