MIL-DTL-32309, DETAIL SPECIFICATION: RIFLE, 5.56 MILLIMETER - M16A4 (05-AUG-2009)

MIL-DTL-32309, DETAIL SPECIFICATION: RIFLE, 5.56 MILLIMETER - M16A4 (05-AUG-2009)., This detail specification prescribes the requirements and identifies the verification procedures for the lightweight, air-cooled, gas operated, magazine-fed, 5.56 millimeter (mm) weapon designed for either three shot automatic burst or semi-automatic fire, hereafter referred to simply as the weapon.