The Aero Precision M5 (.308) lower parts kit helps you to build a custom .308 AR from the ground up. Mil- spec dimensions and coating ensure the highest quality and correct component interface.This lower parts kit does not include the fire control group or pistol grip.Features: Aero Precision M5 (.308) Complete Lower Parts Kit Our custom takedown and Pivot Pins are made to work with our M5 lower. They will work with DPMS-pattern lowers as well but will stick out further.Includes: Takedown/pivot Spring Takedown/pivot detent M5 .308 Takedown pin M5 .308 Pivot pin M5 .308 Bolt Catch Bolt Catch Spring Bolt Catch Buffer Bolt Catch Roll pin Safety Selector Safety Selector Spring Safety Selector Detent Buffer Retainer Buffer Retainer Spring Magazine Catch Body Magazine Catch Spring Extended Magazine Catch Button MADE IN AMERICAYesFINISHNoPLATFORMM5MANUFACTURERNoWEIGHT(S)-OTHER FEATURES-