nope-it's an xm177or maybe a car15- i can't remember which ,but i got pics of special forces troops circa 1969 loaded on a chopper with car15s- the son tay raid-the "shorty" has been around almost as long as the regular rifle, being issed to special forces, dog handlers, and certain buddies of the quarter-master, and of course, captains and above- the newer generation with the round handguards and 1/7 twist barrel was about 85-86or so as i have a 1990 issue and the a2manual says 1985 copyright- and they were common by that date-the manual i have still has the first generation rear sight with the dial instructions, but i have the a2 h-bar but the skinny barrel- the a2 sporter