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The CMMG MK4 Rifle is engineered with purpose for those who refuse to compromise quality. Each CMMG MK4 rifle comes with a 16 barrel and is designed for balance, accuracy, and maneuverability. The CMMG MK4 is equipped with a CMMG ZEROED Pis
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CMMG's ZEROED 60º / 90º is an Ambi-Safety Selector for AR15 Rifles with the ability to install for a 60º throw or 90º throw. Many shooters prefer the path ofeast resistance while many others still want the traditional 90º t