Caliber: 9mm. Capacity: 17-round magazine. Barrels: 4.1”. Weight: 22.8 oz. Sights: Fixed combat. Features: Polymer frame, striker-fire. Slim model has 3.4” barrel. Tactical model has 4.6” threaded barrel. Slim Elite has new grip module. Slim Commander Elite has Mischief Machine aluminum grip module. Subtract 10% for the Slim variants.