Download or read book FM 23-9 Rifle, 5.56-MM, XM16E1 1966 written by United States. Army and published by Lulu.com. This book was released on 2018-09-29 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: FM 23-9 Rifle, 5.56-MM, XM16E1 1966-07-16"The rifle, XM16E1 (fig. 1), is a 5.56-mm, magazine-fed, gas-operated, air-cooled, shoulder weapon. It is designed for either semiautomatic or full automatic fire through the use of a selector lever."