Thinking of moving this on as it doesn't get a huge amount of use. I would prefer not to post so preference will be given to people who can either pick up direct from me or I can come to you anywhere in London. 

Its been upgraded by Alan at Land Warrior, I am taking a fair financial hit on this but it's not being used, so no reason to keep it!

JG MP5SD6, plastic bodied version. Say what you like, it makes it quite light to manoeuvre around and is pretty solid. I have only used this for 2 skirmishes, the only wear is where the fire selector transfers are which were rubbed off whilst being modified. 

FPS: 335-345, depending on the temperature and where the moon is etc. 

ROF, bloody high on a 7.4 lipo and ridiculous on a 11.1v. No problems feeding as well. BB's fly straight and true. It actually outranges a number of my rifles with more expensive barrels. 

Parts:

Madbull Hop up tracer LEDs. Very bright and power is fed from whatever battery is powering the actual rifle. A small switch is mounted on the side of the receiver.

TM EG1000 MAX Motor  
First Factory Strike Chamber hop unit kit
Guarder Cylinder Enhancement Kit (Cylinder, piston, Piston head)
Guarder Air Nozzle.  
G&P Polyamid Low Resistance Selector Plate  
First Factory Quick Release Mag Catch  
Tokyo Marui Low profile Mount Base  
SHS V2 Steel Spring guide  
ZCI 6.02 Barrel  
Airfet Mosfet  
ICS Tactical Handguard  (A bit finicky to get on, but its got a huge battery space, does not come with pictured grip, this is a fairly rare and expensive accessory. There is no other SD railed handguard that I can find available that is big enough to fit a battery.)
Prometheus purple bucking  

6x GSG High Cap mags. 

Deans Connectors

It's actually very difficult to attach a tracer unit to the MP5SD without an adapter that will ruin the fat silencer look of the rifle. So the Hop unit tracer mod is very good and somewhat unique in this instance!