Hi,
I have been having issues shooting 124GR 9mm suppressed on my P-10C with the Obsidian 9. Every few rounds the magazine slips down out of battery, and I have to tap and rack. This does not happen with 150GR subs....any ideas as too why? It does not happen un-suppressed either. I have also tried using duty ammo and the same result as the 124's suppressed