I change the sights and replace the mag and slide release parts w/ the Vickers parts. All else remains OEM. I replace the recoil spring/guide rod and trigger spring every 5k rounds.
I have yet to have any malfunctions that were not ammo related except 1 bad Glock mag out of dozens. The few Glock malfunctions That I have witnessed were almost all aftermarket parts or bubbification induced.

mike r

Don't wish it were easier
Wish you were better

Stab them in the taint, you can't put a tourniquet on that.
Craig Douglas ECQC