Manufactured from 1979 to 1999 and marketed to law enforcement and foreign military clients, the AC-556 family of weapons is the Mini-14 .223 caliber rifle configured as a factory original selective fire machine gun. Fitted with a birdcage flash hider, blade and adjustable peep sights and standard receiver markings, with the addition of "27377-GO3" on the left side of the receiver; no specific information was provided about this mark, but it is likely an internal inventory/rack number. The selector switch is positioned on the right rear of the receiver, with positions for semi-automatic, three round burst, and full automatic. Smooth hardwood stock, with vented synthetic upper cover, checkered pistol grip, and folding metal buttstock.

Very fine, with 95% plus arsenal quality refurbished matte finish, with oxidization concentrated on the flash hider and mild handling marks overall. The stock is also very fine, with some light scratches and dents on the wood and mild scuffing and spotting on the buttstock. Mechanically excellent. NOTE: This weapon is a National Firearms Act (NFA), fully transferable Class 3, which 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.