CMMG Lower Parts Kit, MK3/LR308 with Ambidextrous Selector

All the parts you need to get started on your next Mk3 build are in this kit! Combine this kit with a buttstock kit to complete your lower group! this kit includes a CMMG Ambi Selector, and is compatible with CMMG Mk3 Lowers and most LR308 type lowers. Though, not all 308 lowers are the same. The 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 a CMMG receiver.