HI , EVERY ONE I have Glock 19 made by this year in feb , buy the LaserMax for this pistol, but when installed.I have 2 problem . 1. The spring for locking slide very hard to put on the placed , call LaserMax , they said try to bent it little bit or smack it down as much as you can????????????.......wow it that the way they install???? 2. The LaserMax guide rod not fit in to a placed, a bit bigger then the Glock guide rod , so if i try pushed down,it will go in there but what happen is , when i pull the slide And let it go , the slide not going back to the placed and hang on half way back or some time still stuck on the way about 1/2 " . Call LaserMax they said try to push down the spring , but i very sure the spring all way down and the problem cause by the dia. of the place for guide rod for this year they(Glock) make and the LaserMax last update 2003. so i don't know the other year model have a problem or not ? please post for every body know. Thank you.