AG1 24 Chamber Expansion System Rear Sight and other air-powered guns that

and other air-powered guns that use an HPA tank as their power source

Swap out the magazines as your gear changes from a full-size AK to a smaller Krinkov and stay current easily

Outer diameter is 7/8 inch

Slightly wider and taller than the 12 oz tank but holds 67% more CO2

AG1 24 Chamber Expansion System Rear Sight and other air-powered guns thatAn Expansion chamber is used on a gun operating on CO2. The CO2 flows out of the tank and into the expansion chamber allowing the CO2 to expand and warm up. This process increases the paintball marker's accuracy. The more chambers an expansion chamber has, the better it works. Compatible with paintball markers from these manufactures: 32 Degrees 32 Degrees makes the Icon and Rebel marker series, as well as the PT Extreme paintball pistol. Action