I use it for a breach loading nerf launcher that I use at scenarios at my "home" scenario field. It works great. It adjusts between 10 and 120 psi and refills the system perfectly. Makes a nice and easy remote line that makes things amazingly fast to fire. I recommend it to anyone who wants a remote line to their system. sparrow, stop by my camp at D-Day and I will let you have a look at it. I will be bringing it along with me for the sole purpose of showing it off.