CMMG Mk57 5.7x28 AR-15 Review



The New CMMG Mk57 in 5.7x28mm Caliber, uses the Patented Radial Blowback Bolt to reduced felt recoil and add reliability. Flat Shooting and accurate, it's a pleasure to shoot at the range. https://www.cmmginc.com/product/pistol-mk57-5-7-x-28mm/

Big thanks to my daughter Sarah!

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    • Uploaded: 07/25/2018