Here at the KTOG we took a look through the Kel Tec tribal knowledge archives and unearthed Don Haney's tried and true tips for installing a trigger shoe on a P series pistol.
Don Haney, better known as "Golden Loki," a gun smith and custom Duracoat artist, hosted a number of articles for the gun community in general and for the Kel Tec community, through TheKTOG.org, specifically. When Don retired, he closed his website, effectively shutting down internet access to his quality articles. Among those lost was his "Trigger Shoe" article.
We have talked about the trigger shoe installation over the years here on the site and its still very relevant. Advertised originally for the PF-11, it will fit the PF9 as well as the P32 and P3AT (at least according to Kel Tec's catalog). This nifty little accessory gets rave reviews from those who use it.
Kel Tec P11 with aluminum trigger shoe (as well as the KT pocket clip and steel guide rod)
Fortunately, Don gave permission to KTOG to bring his material back life.
What follows below Don's material, republished with his permission:
Trigger shoe for P series pistols part #P-392 (add G for grooved, A for aluminum) available directly from Kel-Tec for about $10. The shoe increases the trigger surface from .3 inches to .5 inches wide. This lessens the perceived weight of the trigger pull. This is very nice on the P-11/40 which has and advertised trigger pull of 9 lbs.
Some people advocate putting them on the P32 which has an advertised trigger pull of 5 lbs. I do not like this idea however because the shoe is wider than the P32 trigger guard.
You can use a bit of gasket sealer to help keep the shoe in place. You can also use a small drill bit (turn by hand only) to create dimples in the side of the trigger where the set screws contact the trigger to prevent the shoe from sliding.
KTOG Member Madcat1's PF-9 with a nicely installed black trigger shoe
A word on placement:
Before you semi-permanently install the shoe, try a few different positions, I like mine near the top, where it contacts the grip and takes up the slack in the trigger pull. (make sure the trigger resets every time) Others like the shoe at the very tip of the trigger. This keeps the finger from getting pinched between the trigger and trigger guard (never pinched my finger) and provides maximum leverage for the trigger pull.
I enlarged the opening in my grip enough so that the frame could be removed with the shoe installed. (ordinarily it must be removed) Then I used epoxy to permanently attach the shoe.
As you can see, it doesn't take much to make room for the trigger with the shoe. Knowing that the shoe absolutely will not come off is well worth the effort.