Manufactured in Broken Arrow, Oklahoma, this individually marked and registered auto sear is fitted in a shelf pattern trigger pack, installed in item "B" of this lot. The pack has been numbered to match the sear on top. Internals are configured to match the markings on the trigger housing.

Originally manufactured in 1986 as a semi-automatic carbine, this Heckler & Koch has been reworked into an "MP5" marked host gun. 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 full automatic firepower and closed bolt accuracy. Post front and 4-position drum rear sight, with a textured forearm (an aftermarket Laser Products weaponlight model) and pistol grip, and a two-position telescoping buttstock. The barrel is marked "IG 3V", and has a set of mounting lugs near the threaded muzzle. The receiver is in the traditional "shelf" pattern for semi-auto HKs, with the "MP5" nomenclature added to the top, sear number on the right side of the magazine well and Vollmer address on the right side beneath the trigger housing. The trigger housing is fitted with an right handed selector switch and bears "0/1/A" markings, the bolt marked "IG171", and the unmarked semi-automatic bolt carrier welded up for proper engagement with the auto sear.