Originally manufactured in 1989 in Germany and imported by HK of Chantilly as a SP89 pistol, then reconfigured to act as a host gun by Fleming Firearms, which involved remarking the model nomenclature and installing a three-position trigger pack modified to be compatible with the unmodified commercial "shelf" style receiver and fitted with the Fleming fully transferable auto sear that was registered prior to 1986. Fixed blade and notch sights, with the top of the receiver remarked "HK MP5K" ahead of standard markings consisting of the serial number "21-14455" and date code "IK(antler)" (1989), and the right side under the trigger housing bearing the Fleming markings. Reinforcing blocks on the stock rails, with a functional paddle lever on the mag catch, vertical forearm grip with handstop, and textured pistol grip with "S/E/F" selector markings. Includes a shipping box and four extra magazines.

As described in A.