At least 2000 rounds through mine. Had maybe 3 come out like those you posted above. Only using OEM glock mags. Ammo was 1000 blazer brass and 1000 remington. Plus some random boxes of other stuff. Seemed to do well with everything.
Updated my JRC with a 15in free float m lok and some sights to replace the facog.
Updated my JRC with a 15in free float m lok and some sights to replace the facog.