Madbull CO2 Air Tank Adapter with Pressure Gauge

"works great on adjusting the output pressure on co2 tanks for green gas mags and co2 compatible grenades

"I bought this adaptor and im very happy i did. 75 bucks isnt cheep, but its worth it. Ive been into paintball, and so i have all the tanks i need. i have a 20 oz tank with an on/off valve. its very nice to have that so that you just screw the tank on all the way, then air it up(reducing friction by 100%) ha. the unit itself is very solid and pretty heavy. the gauge is GREAT to have. i have also put it on my HPA tanks. that is in my opinion is better than co2, b/c it has a gauge. so i can tell how much air i have in the tank, as well as how many PSI is going in. the adjustment knob is very easy to adjust. too easy. i need to take it off and put some teflon tape so i dont bump it on accident and adjust it(like i have been doing). if you have a new grenade, there is NO leaking. also (unlike my propane adaptor) it has almost no exaust when you stop filling the grenade.

conclusion: BUY THIS. it will save you money on gas. ALSO. ive filled my grenades up to 800 psi.DONT DO THAT. it broke my mad bull. fill from around 200 to 450 psi.