CMMG Mk3 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, and pistol grip. Compatible with CMMG Mk3 Lowers and most LR308 type lowers. All parts meet or excede mil-spec.
Specifications:

Type	Parts Kit
Model	Lower
Dimensions	Standard
Size	AR/Mk3
Material	Various
Action
Trigger
Safety
Thread Pattern
Finish	Black
Bolt Type
Hand
Hammer Type
Max Capacity