This video reviews the CMMG Mk57 Banshee pistol and SBR variants chambered in 5.7x28mm. It highlights the firearm's AR familiarity, delayed blowback system with a skeletonized bolt for reduced recoil, and ambidextrous controls. The review includes extensive testing of various ammunition types, including subsonic and specialized rounds, against targets like bowling pins, avocados, melons, and ballistic gel, demonstrating the 5.7x28mm cartridge's performance characteristics.
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