CQB Russian HPA Adapter Valve for JAG Scattergun

"Good but note on any of the models whose fill valve is in the pistol grip, the opening in the plastic grip may need to be drilled open to make more room, however i made enough room by grinding it out with a knife

"Works great in my JAG Arms Scattergun. Don't overtighten it, you risk snapping it in half like I did. I had to buy a new buffer tube because my broken screw extractor started cutting in to the threads for the fill port. On both the original buffer tube that I snapped one in and the new one, the adapter did NOT sit flush with the buffer tube, trying to make it sit flush is how I broke it. If it holds pressure and doesn't leak, just leave it. There was a roughly 1.5mm gap on both adapters and buffer tubes I used. Again, not sitting flush is normal and trying to make it sit flush risks snapping it off in your gun. Once I figured that out, I had absolutely no problems with it. Side note, due to the volume of the reservoir in the buffer tube, it dumps a lot of air out when you disconnect your hose because there is no check valve.

"I trust this product. It works exceptionally well. It is easy to install. I didn’t have Teflon tape so I used one wrap around of electrical tape stretched out around the threads, screwed it right in my jag arms reaper, and I haven’t had a leak. Amazing stuff.