RISE Armament AR-15 Premium Lower Parts Kit 12003-ADV

The RISE Armament AR-15 Premium Lower Parts Kit is a high-quality, MIL-SPEC 20-piece kit designed to complete your AR-15 lower receiver assembly. This kit includes all the essential components—such as trigger pins, springs, and detents—necessary for a functional lower, excluding the fire control group, pistol grip, and trigger guard.