Sear is individually marked, installed in an unmarked "shelf" pattern trigger pack, which is configured for an ambidextrous selector, HK21 pattern ejector, sear bar and hammer, and safe/semi/three-round/full operation.

Very fine, with light handling marks. In good order. NOTE: This weapon is a National Firearms Act (NFA), fully transferable Class 3, which is registered with the Bureau of Alcohol, Tobacco, Firearms and Explosives, (BATFE) under the provisions of 18 U.S.C. Chapter 44 and 27 CFR part 479.

Built around a "shelf" pattern Heckler & Koch receiver, this host gun has been built up into a short-barreled variant of the HK21 general purpose machine gun. Introduced in 1961, the HK21 was exported to multiple countries, including the United States for use by the Special Operations community. Hooded post front and four-position drum rear sights, with a pair of bipod mounting rails and a swiveling carry handle on the forearm heat shield, bipod, quick-detach barrel with birdcage flash hider, "HK21K" on top of the receiver between a pair of scope mounting points, reinforced side rails, silent bolt closure device, and a "dog leg" pattern fixed buttstock. The trigger housing is properly sized and shaped for the HK21, with pictographic markings matching the trigger pack configuration and a cosmetic faux pin at the front. The bolt head is marked "HK 2/70" and the bolt carrier "HK 4/70", the latter properly configured to interface with the sear bar and feed mechanism.

Very fine as upgraded to full auto, with 97% plus factory matte black finish, showing minor handling marks overall. The furniture is in equal condition. Mechanically very good.