CMMG MK57 Guard 5.7x28mm

LIKE WHAT YOU SEE? CONSIDER PURCHASING A MAN CAN: SIGN UP FOR OUR EMAIL LIST: SUPPORT IV8888 ON PATREON: In this video we showcase the brand new MK57 5.7x28mm Guard from CMMG. This particular variant fires the same cartridge as the venerable P90 and uses FN Five Seven magazines and