I have a new gen 36 45acp. Every so often it fails to go completely In battery, I hit the back of slide it will go, it,s about a 1/4 inch fron closing it has a mag ext for 1 rd. both mags have the ext, I would appreciate any help I really luv the 36 it is very accurate & easy to control. I thought it might be the mag ext, I would like to keep the ext, I think it,s a good idea since it only holds 6 rds with the reg mag. I forgot to mention it only has 100 rds down the pipe.