i have asked and still have not received a clear answer. I have a LC9s. Love it! i want to install a laser on it. the crimson trace 412 is good, but the 413 is better looking on the gun. the guns are supposed to be the same with the exception of magazine disconnect and delete of the safety. Has anyone tried mounting the Crimson Trace 413 xt on a standard lc9s and was there indeed an issue? i have found an excellent deal and want to order it, but getting a lot of mixed information.