Specter Gear Molle/Pals Compatible Modular Tactical Holster for Springfield Armory XD9, XD40 and XD45 4-Inch Barrel Service Model Handguns Modular webbing on the outside and spine of holster allows for mounting of pouches on the holster Fits Springfield Armory XD9, XD40 and XD45 4 inch barrel service model handguns Compatible with all USGI MOLLE PALS modular carriers Can be configured for right or left handed users Moldable alloy thumb break retention