Stainless Steel Adapter For CO2 Paintball Tanks, Can Be Use On Soda Beverage Machine, Save Money On Refills. Fast Shipping, Lifetime Warranty. Average co2 refill in paintball stores or sporting goods store is from $ 4.00 to $5.00 With our adapter you can use an standard co2 paintball tank for instant savings Easy to use- Easy to install-VIDEO AVAILABLE Technical Help Available Monday Thru Friday, Customer Service Line Trinity Supply Inc 818-558-6510.