PSA 8" 9mm misfires

Purchased a PSA 8" 9mm lightweight MLOK SBA3 pistol back in September. The trigger wouldn’t reset about half the time so PSA sent me a new replacement trigger group which I just got installed. That fixed THAT problem, but now I’m getting light primer strikes on probably 20% of various ammo. Any ideas before I contact them again? I love the pistol but it has to be 100% reliable for its intended use.

Make sure the trigger springs are installed correctly.

Edit: what buffer, spring, etc.

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Try a couple different types of ammo ……the springs and the ammo are the easiest thing to check