I've heard mixed reports about the Norinco 37 copies w/enough negative that I decided not to take the chance on one. Their 870 clones, however, seem to be pretty decent (if a bit crude), taking most 870 parts/accessories. The Norinco/Hawk 982 w/ghostring sights has been 100% reliable w/a couple hundred rds of slugs & 00 buck so far. The only problem encountered to date is the ghostring sights loosening under the heavy recoil, easily fixed w/Loctite.
Tomac