Released in 1974, the HK91 was developed as a U.S. commercial version of Heckler & Koch's venerable G3 select-fire, roller-delayed battle rifle, with a shelf-pattern receiver to prevent the installation of select-fire internals. Manufactured in 1981 per the "IB" date code. Features hooded blade front and four position drum rear sights, birdcage flash hider, color coded "0/1" selector markings, detachable folding bipod, and a carry handle attachment on top of the receiver. Fitted with a textured triangular polymer handguard, finger groove grip with thumb rest, and fixed buttstock. Includes a green web sling, an extra fixed buttstock with raised cheek rest and enlarged buttpad, and an extra telescoping stock assembly.

Excellent overall, retaining 97% plus original black finish with scattered minor scrapes, scuffs, and slight edge wear. The extra stocks are also excellent with limited handling evidence. Mechanically excellent.