I have a keltec p3at and I never could get used to the sights, I blamed the gun untill I saw my dad shoot the best group I have ever seen come out of a pocket pistol, I found two things really helped, a $12 mag extension (did not affect printing under my clothing at all) that really helped me becuse with only one finger wrapped around the grip I was really jerking the trigger.
secondly, and this is kind of expensive, and only does any good when its not real bright out, I bought a crimson trace for $179. as I have stated on these forums before, I had buyers remorse about the laser untill I got a change to try it, It turned my "gut gun" into something I can actually aim (or point I guess
), I don't know if I am just horrible with them or if they suck but the sights on the kel tec don't work for me.