Full metal construction makes this replica very strong and durable. 

Gate Titan Advanced mosfet (comes with usb connector and cable for reprogramming) Software can be easily upgraded to Expert via the Gate website. Patch included. 

Deans connector

11.1v lipo ready

16:1 SHS high speed gears

MAXX model trigger

Re-shimmed V2 Orion gearbox which features a quick change spring system

ProWin hop

M90 spring

Stronger tappet spring so can run PTS EPM1 mags all day long. 

Professionally installed and set up by  ZeroOne Airsoft

Shoots 290 fps on 0.28g consistently, accurately and at range.

This is a lot of gun for the money.

The gun alone new is £280, Gate Titan £120 plus the ProWin hop, MAXX trigger and the fitting and fine tuning. Only selling as I have a new toy to plough money into. 
postage included in price mainland UK only.