This Match Bolt is a drop in ready design for the RugerA(R) 10/22A(R) Rifle. Made utilizing modern CNC, EDM, and special heat treating processes, the Match Bolt is highly durable and provides unsurpassed longevity. Weighing less than the original factory bolt the Match Bolt allows for the use of both high velocity and standard velocity match grade ammunition. 2nd GEN Auto Bolt Stop. Mfg: Power Custom Specs: Stainless with match engraved on the bolt. Heat treated. Weight: 5.9oz