Okay. Extractor spring and insert ordered. https://www.primaryarms.com/sprinco-...ng-upgrade-kit
I'm having some conversations with William Saunders over at Sig but plan on doing a bit more to try to solve this at home. If the new extractor spring, etc does not fix, I might try an H3 buffer. Not a lot to loose and my son can always use in one of his builds. It continues to lock back on empty mag no matter what ammo I use (light .223 up to 75gr NATO). Also, it always picks a round out of the mag and attempts to get it in the chamber but has the hardest time with the Israeli 55gr FMJ BT M193. I have a lot of ammo that looks exacty like the bent rounds in the pix. A lot! I'm fairly convinced that it is an over gassing problem but have no idea how to solve that because it is on the smallest (suppressed) setting now.
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