i got some from a guy over on the ktog. it just replaces the plastic screws and front sights piece. he sent me 4-5 colors and sizes. much much better than the factory setup. also cool because it's cheap and a easy fix.
didn't realize there was a kel-tec forum. i'll have to check it out. that new shotgun they have out is unreal. i'd like to get one of those, though i don't remember the model..
the factory sight will break on you if too tight.both my posts and sight blade cracked on mine. keltec will send extra parts but I recommend going with the alluminum posts.