Review on Rap4 Paintball Co2 Adapter - Black | Quick Change 12g by Robert Aiono

The CO2 adapter is great for the blueprints I found online for the grenade launcher with bullets and paints. That works great! except that I think there must be an o-ring that goes into the area where the cartridge is punctured. I screw the hose into the adapter and when the cartridge gets punctured there is a hissing sound coming out of the cartridge and it makes me nervous. kinda makes me think like an airsoft sonic grenade it's not going to explode less than right next to my face. otherwise no problem! Anyway, I'm just waiting on my order of Nerf Vortex 2 "footballs" and I should be golden after figuring out which o-ring fits best. hitting them from afar. PS I've got myself some Wistler too Ordered Vortex footballs from other manufacturers It will be fun!Next time I will build a cannon over 2" in diameter.