Caldwell Mag Charger Universal Pistol Loader. The Universal Pistol Loader works with both single-stack and double-stack magazines and loads 9mm 10mm .357 Sig .40S&W and .45 cal ammo. This magazine loader is simple to use just drop in a round and squeeze the lever. The adjustable side shims align magazines of any width for optimal use and are labeled with numbers for quick adjustment. The lock knob keeps virtually any size magazine secure including most .380 magazines. The extremely durable polycarbonate construction will stand up to years of pistol magazine loading. Specifications for Caldwell Mag Charger Universal Pistol Loader: Manufacturer: Caldwell Color: Black Caliber: Universal Condition: New Features of Caldwell Mag Charger Universal Pistol Loader: Ergonomic die cast aluminum handle for easy use and no flex operation Robust polycarbonate construction for years of use Drop one round into the charger and squeeze the hand grip to load it into the magazine Works with both single-stack and double-stack handgun magazines Adjustable side shims are labeled with numbers for quick adjustment Adjustable side shims align magazines of any width for optimal use Package Contents: Caldwell Mag Charger Universal Pistol Loader Caldwell 110002: Mag Charger Universal Pistol Loader