If you determine that the fault is with the gun, call S&W, get a mailing label and they'll fix it and have it back to you pretty quickly. Less than two weeks, usually. Whether it's a gun or a magazine problem S&W should fix it.

Do you use more than one mag? If so, does it do it with all of them? They usually want you to send the whole gun.

__________________
"He was kinda funny lookin'"