Originally manufactured in 1983 and later upgraded. Short barreled 5.56mm automatic rifles have been seeing growing popularity in the Armed Response/SWAT role, giving many of the size/maneuverability advantages of a pistol caliber sub-machine gun combined with increased range and hitting power. Hooded post front and four-position drum rear sight, with a Knight's Armament Rail Adapter System installed in place of the forearm, birdcage flash hider, three position "0/1/25" (safe/semi/full) hinge pin configured trigger group and a fixed buttstock. The magazine well bears the HK nomenclature and "ID(antler)" (1983) date code on the left side, with the West Germany/Chantilly, Va address on the right side. One magazine is included, gray steel and "IE" (1984) dated. Also included with the item are three Knight's brand rail covers, a green canvas sling and a Knight's Armament case.

Excellent, with 98% plus original black finish, showing some light handling marks overall. The stock is in equally excellent condition. Mechanically excellent. NOTE: This weapon is a restricted, National Firearms Act (NFA) Class 3, Fully Automatic Weapon, that is registered with the Bureau of Alcohol, Tobacco, Firearms and Explosives (BATFE) under the provisions of 18 U.S.C. Chapter 44 and 27 CFR part 478. This weapon is currently registered as being "LIMITED TO USE AS A SALES SAMPLE (Pre-86)" and as such can only be purchased by an FFL, with a Class 2 or Class 3 SOT License.