CMMG Lower Parts Kit for AR-15. Includes pistol grip, fire controls, springs, and pins necessary to complete a stripped lower. All AR15 Lower Parts Kits now come in color coded pouches to aid in assembly.
Owner's take: CMMG makes a fantastic LPK. I've built up dozens, if not hundreds of mil-spec lowers with this very set. The takedown/pivot pins are slightly extended to aid in disassembly, and the trigger is VERY smooth; almost as nice as a Nickel-Boron coated FCU. Seriously, you won't be disappointed.