My PF-9 has the following mods: Slight fluff and buff where hammer and slide meet. The slip grip Hogue Handall Jr. is kinda standard. I also added my own version of White's Trigger Stop. It involves 2 rubber pads: pencil eraser sliced in 2/3 + 1/3 . Longer pad on the trigger itself, slimmer one on the frame.
This rubber-against-rubber system provides the most amazing trigger break I've ever used, and I've used many. You can perfectly stage the trigger and then a gentle but secure squeeze makes it go BANG!. Increased accuracy 100% and shooting speed as well.
Great, almost free, mod for the Kel-Tec PF-9.
IMHO is foolish not to perform this mod on an already superb pistol. Have I mentioned my PF-9 fires anything you feed it? oh yeah, it's a fierce little one...
Best trigger stop ever. Smooth staging and then a secure pull to break the shot!