[Double D]

Originally Posted by goose22

Update all! Put the rubber grips and the arched sear spring housing back on and did not tightened the grip secrews as tight as before. I really did have them pretty tight. First two mags worked perfect. Fired all rounds and after last round the slide locked back correctly. The last three mags went back to the old problem. Now I am really puzzled. Noticed that the slide and mags operated smoother with the grip screws not at tight, so progress has been made. Any other suggestions?

Are you saying here that you put everything back to stock? If not, I would go back completely stock and see if it operates correctly. If it does, then, I would change ONE thing at a time and shoot it each time until you figure out what it is thats causing the problem.