FASCINATION ABOUT CMMG MK57

Fascination About cmmg mk57

When the bolt carrier moves forward, the bolt rotates and locks the lugs in front of the supporting lug abutments. Once the group moves rearward, the cam pin forces the bolt to rotate and unlock with the barrel extension.The rotating bolt allows force while in the barrel to drop drastically before the bolt completely unlocks, so there isn’t an aw

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