[Rotting]

If you're going DMR, I'm assuming you're playing outdoor. My two suggestions would up the spring a bit. An S90 isn't quite to par, especially since a DMR shoots the same BBs (ideally) as a BA. I'd recommend going to a S100, or if permitted to do so, use an S110. The S90 will only yield you about 330FPS, which typically isn't enough for a DMR. A 6.01mm inner barrel may also be more beneficial, but you have to do some BB research to make sure you won't jam up due to poor quality BBs. Pretty sure Bastards work fine in 6.01mm tightbores.