I would like to clarify one or two points in my post above on the "informal" history of the NS-522. The NS-522 ("Norinco Sports" 522), along with the Norinco models JW-15 and EM-332 were briefly imported into the US in the mid-1990's. The US version of the EM-332 featured the same action as the 522, but had a lighter, sporter-contour barrel, with barrel mounted sights front and rear. (Note that both guns had the same bolt handle.) The US model EM-332 stock was styled as sort of a "biathlon" rifle, and featured twin cut-outs on the right side of the wood buttstock for two spare magazines. Importation of all three models ended around 1997.
New Zealand and Australia, meanwhile, imported a different version of the EM-332. This model featured a "spoonbill" style bolt handle (which is flattened out so as to resemble the handle of a spoon. Think early M-S carbines.), and a correspondingly larger cut in the stock for the wider bolt handle. This is the 332 stock that somehow came to be united with the orphan 522 barreled actions. A Chinese barreled action, made on machinery imported from Austria, travelled first to America, and then arrived in Canada many years later, wearing a stock meant for the Australian edition of the EM-332.