Heckler & Koch HK MP5K-PDW 9mm Navy 4-Position Transferable Fleming HK Sear Machine Gun


Status: In-Stock / Please Call to Purchase

This Chester County Armory listing is for an excellent condition Heckler & Koch MP5K-PDW 9x19mm NATO transferable Fleming HK sear sub machine gun.

This wonderful condition transferable machine gun is powered by a fully transferable, NFA registered, Fleming HK sear housed in an MP5 four position Navy pack that features safe, semi-auto, three round burst, and full-auto capabilities. This pack was initially set-up by HK Gunsmith Mike Otte of Michael’s Machines. This sear pack then resides in an SP5K Title One pistol that has been professionally upgraded by Mike Otte to function as the newest, latest, greatest production Heckler & Koch sear host gun. In addition to making this pistol sear ready, Michael’s Machines also professionally installed an HK tri-lug 1/2×28 threaded Navy barrel and a paddle magazine release, as well as properly remarked the weapon to read “MP5K-N”.

Overall, this weapon is in excellent mechanical and cosmetic condition. The metalwork is solid with no dents, dings, cracks, gouges, or malformations, the BCG and bolt group note almost no wear, the bolt face is crisp and clean, and the barrel is bright and shiny with crisp, clean rifling and well-defined lands and grooves. Cosmetically, this weapon is also in excellent overall condition, with only minimal handling marks. There is a minor surface mark in the painted finish in front of the ejection port, but this mark is only cosmetic in nature, and will cause no operational concerns whatsoever. The polymer vertical grip and four position trigger housing are in new condition, and the folding HK marked PDW stock displays only minor wear and use markings.

This beautiful example of the world’s foremost desired sub machine gun is fully transferable, and is currently on an eForm-capable Form 3 for easy transfer.  The current Form 3 lists “Fleming” as the manufacturer of this machine gun sear and “HK” as the model. The SP5K pistol will transfer separately as a Title One handgun.

This transferable machine gun package will come with one HK German production 30rd magazine, as well as the original SP5K semi-automatic trigger pack to allow the weapon to be easily separated from the sear and used as a semi-automatic pistol, if so desired. The original SP5K foregrip and rear end cap are also included, as under ATF rules, the vertical foregrip and stock must be removed to remain NFA legal if the sear pack is removed from the weapon.



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    This Chester County Armory sale listing is for a Heckler & Koch MP5K-PDW Navy 4-position 9x19mm NATO sub machine gun.  This model is made up of a fully transferable Fleming HK sear and an HK SP5k Title One pistol as a host 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 / Fleming Firearms




    9x19mm NATO


    Roller-Delayed Blowback, Closed Bolt

    Barrel Length



    6.49 lbs


    Matte Black