SIG Sauer P365-XMACRO 9MM/380 LASER ENGRAVED GRIP MODULE - BLACKSIG Factory Magwell INCLUDED! Details Factory replacement grip module for the P365 FUSE. This grip module features laser engraved hexagon stippling for increased grip and texture. It features a true 1913 accessory rail to mount your preferred FOXTROT light and comes standard with a medium sized backstrap that can be easily swapped out for a different size. For different size Sig Guy backstraps click here. Compatible with the 17 round and 21 round P365