As CMMG built a model in part by supporting and innovating distinctive calibers while in the AR platform, the addition with the five.7x28mm Mk57 quick-barrel rifle below is probably going only the beginning.

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Jeremy is TTAG's Deputy Editor, Performing mostly powering the scenes but, when he makes an attempt to jot down, he concentrates on complete gun & gear opinions.

As it is possible to see inside the slow-mo mag dump during the movie previously mentioned, 5.7x28mm is Tremendous comfortable-shooting. Those light-weight bullets don’t create A lot recoil as well as delayed blowback technique does its work, too. The Mk57 simply stays parked appropriate on target. It twitches instead of recoils.

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That’s proper, that click here is a blowback-operated firearm, but it surely isn’t a straight blowback. The bolt head genuinely locks into battery, rotating and locking its lugs into barrel extension lugs identical to a typical AR-15.

Swapping for The sunshine buffer set that fully in addition to resulted in additional self-confident ejection of empty brass.

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I'd a blast taking pictures this issue. Although my AAC Aspect 2 isn’t technically rated for 5.seven, I abused the heck out of it with virtually four hundred rounds sent downrange In a nutshell get and more than a few mag dumps. It held up just wonderful and the Mk57 was reasonably click here silent and extremely nice to shoot.

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That has read more a smoother induce and a far more exactly-suit stock, I’d provide the Mk57 5 stars with no hesitation…at a lower price point.

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As we’ve found with all of CMMG’s GUARDs and BANSHEEs, the Mk57 is a very properly-sorted and very well-tuned gun. Everything fits and functions properly and seems like it belongs jointly.

While This is able to Usually have me howling just like a banshee, a little something Strange took place all through my testing.