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" screws. Rubber, G10, and Polymer grips have 0.155" screws.
Hogue G10 and Rubber grips only work with the 0.155" grip screws. A new set may need to be purchased if your firearm came with laminate wood grips.