CO2 connection kit Use with Umarex Steel Force CO2 rifles Connect to a paintball tank to get more shots per fill Huge savings over buying 12-gram CO2 cartridges • The Umarex Steel Force CO2 rifle uses two 12-gram CO2 cartridges. That can become very expensive. Instead, hook up to a CO2 paintball tank, attach this hose and adapter and shoot longer between fills.
Daisy Adult Red Ryder, Air Rifle, BB, 350 Feet Per Second, 10.75" Barrel, Black Color, Wood Stock, 650Rd Capacity 991938-116 $53.51 
Umarex AirJavelin Air Archery CO2 Rifle Original price was: $229.99.$209.99Current price is: $209.99. 
Air Venturi Remote CO2 Kit, for Umarex Steel Force Rifles
Original price was: $57.99.$39.99Current price is: $39.99.