Features
Based on the Russian RPK light machine gun, the NHM features a stronger receiver and a longer, thicker-profile chrome-lined barrel measuring 20 inches (508mm) compared to the 590 mm (23.2 in) of the original RPK, along with a forward-mounted steel bipod. The NHM-91 was equipped from the factory with two 30-round magazines and a 75-round Chinese drum magazine.
Like the RPK, the NHM-91 utilizes a heavier-gauge stamped sheet metal receiver built from 1.5mm-thick stamped sheet metal instead of the 1mm thickness typical of a Soviet or Chinese-made AKM, resulting in increased rigidity, heavier weight, and improved overall accuracy. The longer, heavier barrel reduces shot dispersion and gives the NHM-91 a longer sight radius, again resulting in improved accuracy over the typical semi-auto AKM. Trigger pull weight is also lighter than other AK designs, and some users report the rifle capable of 2-2.5 minutes of angle accuracy or better with factory 7.62x39mm ammunition.
Stocks on the NHM-91 are of a one-piece thumbhole design with integral pistol grip, and are thicker and longer than the standard AKM/AK-47 buttstock. Made by E.C. Bishop or Boyd and constructed from birch wood or hackberry, the NHM-91 buttstock lacks a separate pistol grip, though the rifle may be retrofitted with a separate buttstock by simply cutting off the lower portion of the stock and grip with a band saw, then fitting a new pistol grip. Like its RPK counterpart, the NHM-91 does not come equipped from the factory with a bayonet lug. However, the front of the barrel is threaded and capped off with a thread protector welded onto the threads. By removing the thread protector, a muzzle brake can be fitted.
Factory NHM-91 rifles were manufactured with a rivet in the magazine release button, preventing use of some Soviet or German-made AKM or AK-47 magazines. Instead, special magazines with a modified tang were manufactured by Norinco for the NHM-91. Since the sunset of the 1994 Public Safety and Recreational Firearms Use Protection Act, removal of the rivet in the magazine release allows use of any and all AKM, RPK, or AK-47 magazines.
Read more about this topic: Norinco NHM 91
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