i don't see a problem with a moded gun. it would take an expert armor that is specific to that gun to know that anything was done that didn't come that way factory.
on my Glock 22 i have a 3.5lbs. trigger, Ti fireing pin and Ti slide return spring shaft.
this is just a heads up. the only thing people really need to STOP doing is calling the magazine a CLIP! a clip is for a machine gun.
A magazine (also called a mag or, commonly but incorrectly, especially when removable, a clip)
Mag http://en.wikipedia.org/wiki/Magazine_%28firearms%29
Clip http://en.wikipedia.org/wiki/Clip_%28ammunition%29
if a lawyer asks you how many rounds your gun has or how many you shot and you say 15 in the clip and 1 in the chamber you can kiss your ass good bye as he will turn that on you as you ment to shoot off alot of rounds since clips are for machine guns.