HOW CMMG MK57 CAN SAVE YOU TIME, STRESS, AND MONEY.

The difference is an angled rear corner on Each individual of your locking lugs that matches up using an angled corner while in the barrel extension’s lugs. The rearwards push of the fired round causes the bolt to rotate together those angles right up until it unlocks and every thing cycles rearwards.When including or altering an address, we use