CALIBER: 9mm OPERATION: Double-action/Single-action MAG CAPACITY: 10 or 17 Rd. WEIGHT: 21.9 oz. BARREL LENGTH: 4.0″ OVERALL LENGTH: 7.4″ TWIST RATE: 1:10" RH HEIGHT: 5.45" WIDTH: 1.55" TRIGGER PULL: 8.8 - 12.1 lb. or 3.96 - 5.06 lb. SIGHT RADIUS: 5.9"