I have a Norinco 84-S .223 it has a tendency to double tap  every so often. I have read that this is due to a weak spring in the bolt. Does anyone know where I can get a stronger spring. Thanks


IllinoisCarry.com

Sounds like it needs a new disconnector spring in the fcg.  $5 fix.

check your firing pin.  My 84S will collect primer shavings inside the firing pin hole.  After a while, they build up and the pin sticks forward.  In these instances, I would get the occasional double, or once I had a slamfire when I dropped the bolt on a new mag.  

Now I clean out the bolt & firing pin channel whenever I shoot the gun.  I've found that Wolf ammo seems to have harder primers and doens't have near the problem.

A stronger firing pin spring would probably help too.