) These screws secure the sight’s polymer shroud in place around the slide and maintain The 2 halves of the gun’s polymer outer frame jointly. For that variety, you’ll also want to have a 2mm wrench for sight changes (also offered) and also a 2.5mm wrench for people other screws. https://andresxlsva.blogsmine.com/22334477/kel-tec-p17-for-dummies