1913 Picitanny rail above the pistol grip is engineered to provide shut eye aid for night time eyesight modules. Far more importantly, the process will increase accuracy and reliability, minimizes perceived recoil, delivers ambidextrous sling mounts and mulitple Picatinny rails for mounting optice and components. Common M14 and M1A actions https://pierrea704udn0.ktwiki.com/user