Too many projects and want to part with this before it gets any further. X-Valve, hasn't been aired up in a while but was working with no issue the last time it was. I believe I have all the extra carriers etc. There's nothing under the grips as far as pneumatics, is T-Rex drop in ready. Rail is a modified Emag rail and has been ULE milled by Luke and has channels for airlines as well. Any questions, please feel free to ask. Looking for $625 shipped. If there is no interest in the marker as a whole I will part it.