MIL-R-71135 (W/ AMENDMENT-4), MILITARY SPECIFICATION: RIFLE, 5.56MM: M16A2E3 (07-FEB-2012) [S/S BY MIL-DTL-71135A]
MIL-R-71135 (W/ AMENDMENT-4), MILITARY SPECIFICATION: RIFLE, 5.56MM: M16A2E3 (07-FEB-2012) [S/S BY MIL-DTL-71135A]., This specification covers a 5.56mm lightweight, air-cooled, gas operated, magazine-fed rifle designed for either full automatic or semi-automatic fire (see 6.1).