Cheap And Discounts Refill CO2 Tank Gas Cylinder Capsule with Threaded and Unthreaded 8g 12g 16g Reusable Rechargeable Cartridge Rifle Accessories Wholesale. Buy Directly From Merchant Aimmind Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.