The sear is installed in a "shelf" pattern housing currently in item "B" of this lot.

Manufactured in Germany in 1993 and imported through HK Inc. of Sterling, Virginia, as a semi-automatic pistol, this H&K SP89 has been reworked into an "MP5K" pattern host gun for the trigger pack in item "A" of this lot. One of the most famous submachine guns in the world, the MP5 has been a go-to military and police weapon for decades, giving users a high rate of fire in a compact package. Features a hooded post front and four-position drum rear sight, with a vertical forearm grip with hand-stop, smooth pistol grip, and a two-position telescoping buttstock. The barrel is marked "H1 JC", and has a set of three mounting lugs near the muzzle. The receiver is in the traditional "shelf" pattern, the trigger housing is fitted with an ambidextrous safety, with color coded pictograph depicting safe/semi/burst/full markings, and the semi-automatic bolt carrier has been modified for proper engagement with the auto sear. Includes two extra magazines.

Steel and alloy construction, 7 inches in overall length, with a three-lug quick detach adapter attached at the rear to mount to the barrel of item "B" in this lot.