This is my very fist time poly handgun, please bear with me. After I lube my gun, I saw there is a small gap about 1mm on the slide opening as shown on the picture; is this supposed to be like that? (I forgot noticed it before I did clean) I compare with my tanfoglio witness match there is no gap at all. Does the magazine have a rattle sound when its 15 rounds loaded?; not in the gun. Thank you in advance.
