I picked another Khan magthe other day for my newly aquired G17. And like what has been said here a hundred times it doesn't drop free. I decided to take some 320grit to the front seam, and the sides to see if that wouldn't help. And it sure did. I didn't do more then a dozen strokes on the sides and front, then wiped it down with a Break Free soaked rag. Result, It drops free like any good glock mag.