Wish I could help you ! I also need to know for certain what unit (even w/out a guage) WILL work.Thank you,John
I'm using an ag1 on/off adapter with gauge on my ninja qb setup. It works fine with no modificatins on the bottle I have.
The one I'm using does have a gauge on it and it has rap4 stamped on the side. I purchased it off eBay from dropzone paintball for around $25. They have them listed if you want to compare a picture to what you have.
Greg, no worries at all. I'm just glad it worked for you. Happy Shooting!
Are you setting up a qb and if so what caliber? I bought my chrony last year and it was at least a month before i got a chance to try it out between weather and work eating up my daylight.