The SIG Sauer P320 Compact Medium Grip Module is designed for 9mm .40 S&W and .357 SIG caliber configurations in a compact frame size with medium grip dimensions.Compatible with 9mm .40 S&W and .357 SIG calibersCompact frame size for enhanced concealabilityMedium grip size for optimal hand fitDurable black polymer constructionDrop-in replacement for P320 modular systemThis grip module allows for easy customization of your SIG Sauer P320 pistol providing the perfect balance of concealability and shootability for everyday carry or duty use.