Compatible with factory Springfield Armory® XD45 magazines ONLY (not included), the Pearce Grip Base Pad Grip Extension for Springfield Armory XD45 Magazines is a drop-in magazine grip extension featuring durable yet lightweight polymer construction for lasting performance and reliable shock resistance. Offers improved weapon control without forfeiting reliability, comfort, or concealment. Grip extension only; does NOT extend magazine ammo capacity. Compatible with factory XDM 45 and the Mod 2 45 models. However, the checkering pattern across the front of the extension will not match the checkering pattern on these frames. This unit will NOT fit the Springfield XDS 45.