Originally manufactured in 1986, this Heckler & Koch was subsequently upgraded with a fully transferable auto sear by S&H Arms Inc. of Oklahoma. The host gun has the caliber marking on the left side of the receiver and the H&K West Germany/Chantilly, Virginia address on the right, and a modified "HK MP5" marking, serial number, and "(eagle/N)IG(antler)" 1986 date code on top of the receiver. The shelf pattern trigger pack has the sear number engraved on the side. Fitted with a hooded post front sight and adjustable drum rear sight, three-rail forearm/handguard, muzzle brake, and adjustable buttstock.

As described in "A".