Colt M16A1 Model 613 5.56mm NATO Factory Transferable Machine Gun w/ M16A2 Furniture Upgrades


Status: In-Stock / Please Call to Purchase

This Chester County Armory listing is for a factory-production Colt M16 Model 613 5.56mm NATO transferable machine gun.

The Colt Model 613 was originally offered by Colt as a Commercial Sales version of the venerable military-provided M16A1 from 1973-1982 after demand for Colt’s military version declined following the end of the United States’ involvement in the the Vietnam War.  Built as a 20″ barreled standard rifle M16A1 variant with a teardrop forward assist, the 613’s were typically “AR-15” marked for civilian sales, but often “M16” marked for direct sales to law enforcement agencies. This particular model does indeed have the much more rare and desirable M16 markings. These models were typically offered in the 5,000,000 serial number range, and this model is no exception. Production of this weapon by Colt appears to be in early 1974 based on its serial number.

This beautiful transferable Colt factory machine gun has had its original A1 furniture upgraded to Colt’s A2 furniture that was first produced in 1982. The remainder of this transferable machine gun remains in its original A1 configuration, including a 1/12 twist original chrome-lined barrel, and it’s original “C” marked BCG. It also features the desired “SAFE”, “SEMI”, and “AUTO” fire control markings. Mechanically, this model is in excellent overall condition. The original fire control internals note very little wear markings. The sear and disconnector are clean with crisp edges; the hammer notes only limited surface markings, and the BCG displays only minor wear.  The chrome bore remains bright and shiny, and the barrel rifling also remains crisp and clean, with well-defined lands and grooves.

Cosmetically, this almost 50 year old machine gun is also in overall excellent condition. There are some minor handling and surface scratches on the exterior original phosphate finish at spots and some small surface marks in the polymer furniture, but no dents, dings, gouges, or malformations are observed in the metalwork or the furniture that would create a cause for any concern.  The right side of the receiver by the fire controls is stamped with 3 small initials and a number, which was made by the original LE agency that initially purchased this weapon from Colt in 1974. That agency has been the only owner of this weapon up until it was transferred to Chester County Armory.

This in-house, factory-production Colt M16A1 transferable machine gun is currently on a Form 3 for easy transfer. The NFA paperwork indicates the manufacturer of this weapon as “Colt” and the model as “613”.

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    This Chester County Armory listing is for a factory original Colt M16A1 Model 613 5.56mm machine gun that features Colt M16A2 stock, pistol grip, and forearm upgrades. This item is an NFA-registered, fully transferable machine gun. This model is currently in-stock, in our possession,  and available for purchase on a Form 3. Please call us at 610-235-6155 to purchase or for additional information on this item






    M16 Model 613


    5.56mm NATO


    Gas Operated, Rotating Bolt

    Barrel Length



    Colt Phosphate Gray