Up for sale is my GHK G5. Fantastic gun but unfortunately due to my HPA purchase at Christmas and the fact I prefer my GHK AK this sits in 3rd place and rarely gets used. 
You get two complete upper receivers, dmr and original cqb size. Both have a hop up, the dmr is the upgraded cnc unit. 
To change between them it’s the two body pins and transfer the bolt over. That’s it. 
Upgrades and spares - FG adjustable nozzle, RA-Tech heavy bolt carrier and barrel set (not made anymore) the heavy bolt also has the stock nozzle in. You need a couple of parts then you could remove even the need to swap the bolt over. A semi sear if you want to run the dmr at higher FPS. Two I believe stock inner barrel cbq length. Two spare cqb length rails, two spare charging handles, metal charging handle fitted to cqb gun, 4 gas tight magazines. Unused cheek rest from dmr kit, unused M4 stock adapter. Original boxes for gun mag and dmr kit. 
Only mark is around the front takedown pin as it’s a screw type and it was stuck on the first attempt taking it out. Otherwise everything is as new.
Took a while to put this all together and it’s now an awesome package. 
Over £800 worth of kit just for the major parts, very good condition if not as new for a lot of it. Looking for £500. Ideally a regulation meeting collection but will post at expense. I’m in Hampshire.
Trades/part ex, might consider HPA tapped shotgun or will take TRMR as part exchange not interested in another assault type rifle.