UMAREX S&W 4″ BK .177 CO2

Magazine Capacity: 8 rounds

Caliber: .177 (4.5mm)

Weight: 2.1 lbs (950 grams)

Overall Length: 9.1 inches (230 mm)

Shooting Mode: Semi-automatic

Materials/System: Polymer frame, metal slide, CO2 powered

Power Source: CO2 Under 2 Joule