Heckler & Koch HK 51 7.62x51mm NATO Front Push Pin Transferable Machine Gun


Status: In-Stock / Please Call to Purchase

This Chester County Armory listing is for a Heckler & Koch Model HK 51 7.62x51mm NATO fully transferable NFA registered receiver machine gun. This an original front push pin conversion model that will accept all factory original Heckler & Koch G3 machine gun trigger packs.

This model was originally converted to a G3 machine gun by Ballistics, Inc, utilizing an HK 91 registered receiver. It was then further upgraded to an HK 51 configuration by Vollmer Manufacturing.  This model features an original German G3 telescoping stock. The factory H&K ambidextrous fire controls are pictogram marked and include positions for safe, semi-automatic, three round burst, and full-automatic.  This model also features the factory correct HK double rear push pin Navy trigger housing, and not an MP5/HK33 housing as often utilized on the 7.62mm conversions. This model has been test fired for function and it runs flawlessly with standard 7.62mm SAAMI spec ammunition.

This transferable machine gun is in outstanding mechanical condition. The full auto bolt carrier group notes only minor wear.  The bore remains bright and shiny, with crisp, clean rifling. The fire control internals are in beautiful, like-new condition as well.

Cosmetically, this weapon is in overall very good condition. The metalwork notes no dings, dents,  gouges, malformations, etc. and only minor surface scratches. The exterior finish does note minor handling and use marks, including light surface scratches, throughout the exterior finish.  The polymer furniture is in excellent condition with no handling or use marks of note. The four position trigger housing is in factory new condition.

This wonderful NFA registered transferable machine gun is currently on an eForm-capable Form 3 for easy transfer. The current NFA paperwork lists “Heckler & Koch” as the manufacturer of this model and “G3A23” as the model.

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    This Chester County Armory listing is for a Heckler & Koch Model HK 51 7.62x51mm NATO registered receiver front push pin 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


    Heckler & Koch / Ballistics / Vollmer


    HK 51


    7.62x51mm NATO


    Roller-Delayed Blowback, Closed Bolt

    Barrel Length



    H&K Black