Question is, is it the gun, the mags, or the ammo? Or the shooter?
Prime suspect is the ammo.
I would try to eliminate the ammo by running a box of Factory through it & see if the problem persists.
When I can get it, I am partial to CCI Blazer (aluminum case) 200 gr FMJ @ 1,000fps. Runs my G20 like a sewing machine.
If it does run, then the problem is in the gun or the mags. Or both. Or the shooter.
In which case, I would send them back to Glock to troubleshoot.
Last edited by Comrade Bork; 02-15-2013 at 21:07..