Lower Parts Kit, Mk3, Gunbuilder's Kit

The CMMGMk3 Gun builders kit includes most of the necessary parts to build up your lower group except the commonly upgraded parts. Does not include Fire Control Group or Pistol Grip. Compatible with CMMG Mk3 Lowers and most LR308 type lowers. Check out our LPK Install resource article for an interactive assembly guide and in-depth breakdown. All CMMG products come with our Lifetime Quality Guarantee.Kit Includes:Bolt catch & screw-in pinBolt catch plunger & springTrigger/hammer retaining pinsSafety, detent, & springMagazine catch, spring, & release buttonPivot/takedown pins, detents, & springsBuffer retainer/spring**Not all 308 lowers are the same. Our kit is designed to work with our lowers and are "Mil-Spec". We would recommend checking with the manufacturer of your lower for compatibility of parts if you are not using our receiver**