CMC Triggers AR15/AR10 Full Auto Select Fire Trigger Two Stage - Flat Small Pin 2lb Set - 4lb Release Black 2lb/4lb. In semi-automatic mode the CMC Full-Auto Compatible Trigger is a precision trigger that allows precise and accurate trigger control. In fully-automatic mode the CMC Full-Auto Compatible Trigger offers a smooth continuous trigger pull and abrupt hammer release. Note: Our Full-Auto Compatible Select Fire Triggers will not make your firearm fully automatic by themselves. Specifications for CMC Triggers AR15/AR10 Full Auto Select Fire Trigger Two Stage - Flat Small Pin 2lb Set - 4lb Release: Manufacturer: CMC Triggers Color: Black Trigger Shape: Flat Trigger Pull Weight: 4 lb Package Contents: CMC Triggers AR15/AR10 Full Auto Select Fire Trigger Two Stage - Flat Small Pin 2lb Set - 4lb Release CMC Triggers 94518: AR15/AR10 Full Auto Select Fire Trigger Two Stage - Flat Small Pin 2lb Set - 4lb Release Black 2lb/4lb