Please Note: SIG Sauer supplies 2 different screw lengths for the P938, depending on the factory grips sold with the gun. Laminate wood grips have 0.188 inch screws. Rubber, G10, and Polymer grips have 0.155 inch screws.
Hogue G10 and Rubber grips only work with the 0.155 inch grip screws. A new set may need to be purchased if your firearm came with laminate wood grips.