Sear is individually serial numbered and installed in an unmarked "shelf" pattern trigger pack, which is fitted with an ambidextrous selector switch and is in "full auto/two-round burst/semi-auto/safe" configuration.

Originally manufactured in 1992, this Heckler & Koch was converted by T. Dyer into a host gun in emulation of the MP5K submachine gun. An extra-short machine pistol variant of the MP5, the MP5K provides strong firepower in a compact package, and is associated with bodyguards and clandestine operators. The "PDW" variant integrates a side-folding buttstock. Hooded post front and four-position open notch drum rear sights, model and date markings on top of the receiver. The "T. DYER" address has been added to the right side under the trigger housing, with the sear number added to the left, and the muzzle has both threading and a three-lug quick detach mount point. Receiver is "shelf" pattern, with a functional paddle magazine release, forward pistol grip, synthetic trigger housing with cosmetic pin and four-position pictographic markings, and a "HK" marked side folding buttstock. The bolt is marked "JC 192", and the bolt carrier has been professionally modified to engage the sear.