The M1 is a .30 caliber semi-automatic carbine used in WW 2, Korean War and Vietnam. This cast semi-automatic replica rifle pin is approx 3/8 inch wide and 2 1/2 inch long Buy this M1 rifle pin for that special weapons lover, .30 caliber fan, or as a special addition for your weapons pin collection This rifle pin includes a pinch pin back and is individually poly bagged in a smoke free environment. This superior quality collector pin can be proudly worn or even displayed on the sun visor. Buy this pin for special gift pin or to use as a hat pin, cap pin, vest pin, lapel pin, display pin, visor pin, etc