Originally Posted by ithaca_deerslayer
Is the hypothesis here that the screws stripped themselves in 500 rounds?
Or were they factory over torqued to begin with?
Was gas leaking out where the screws were supposed to be holding the gas key tight to the carrier?
Over-torqued, and the carrier threads or screw threads gradually gave way.
I couldn't find any sure marks to show it, but I'm assuming gas was leaking out from around the gas key and causing the short-stroking.