recce said:I've got 6400 through mine. The only mechanical problem I've had was a broken slide stop.
You broke the forged slide stop?!? Let me guess, you ran it for 640 roudns with the original craptacular Norinco recoil spring didn't ya?
Even Wolf recommends you change out their top of the line springs every 5K rounds or the gun will start to batter the slide stop.
My Nork spring stayed in until I got my first stove-pipe (at about 1100 rounds). It's had Wolf springs ever since and they get replaced every 5K or so.
No appreciable signs of wear yet, except to the blueing on contact surfaces.