RT/FBOAR/EXP Chamber
All fitted, Full Boar closes up the back of the gun, and quietens it, the rear dovetail looks the part as well, it comes with a lighter rear bolt, so I would recommend it. RT is superb, I can outshoot my 12V Xbrd Revvy. GTA Expansion chamber basically makes it easier to maintain a consistent velocity, and stop dragging liquid into the valve on cold days (I have a anti sphon fitted as well to prevent this).
The only thing I do not have is a FlatLine (soon to be fitted) but have tried them, and they work well over long distances.