The Xtreme Performance Bolt (XPB) carrier group is a modern upgrade in the guts of the gun. These new internals come coated in the newest hotness, DLC, or Diamond Like Coating to make the bolt run smoothly and clean up faster. The bolt features precision machining, proper staking on the gas key, lightening cuts in several locations, and beveled lugs to increase efficiency. We took this bolt out and ran it in several different guns, in 5.56x45 and 300 blk, both suppressed and unsuppressed with several different silencers.
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