i have nitesiters on my P3AT, which is the
real version of the LCP, anyway.
they're a pain in the ass to apply, and mine didn't stay on very well; i had to use superglue. i also put them on my S&W sigma, and on the frontsight of my Mossberg 500; they stuck fine on them. my opinion, night sights are wasted on pocketguns like the LCP; they're really meant for point shooting at extremely close distances, and at those ranges, light shouldn't be an issue.