Specna Arms have skyrocketed to be one of the best airsoft manufacturers in the world, and with good reason. They are consistently improving their line up, and listening to what customers want.
The EDGE series is their higher-end tier, each coming with a scratch-resistant coating on their metal bodies, a pre-installed GATE X-ASR MOSFET, and Orion gearbox. Internally, the Orion gearbox features steel gears, sector chip pre-installed, quick spring-change system, aluminium air seal components (cylinder head, piston head, and air nozzle). Further up the chain you have their superb rotary hop up unit design, combined with a 6.03 tightbore barrel out of the box.
The GATE X-ASR removes the need for a fuse, saving on space, which for the E18 helps a considerable amount, considering it is as short as you can make an M4! There is no stock, and you've got a stubby barrel built in, ending in an amplifier (which the inner barrel runs to the end of, to give maximum performance). It is the same front end as the model 10, just without a stock!
The EDGE series from Specna Arms is wired to Deans as standard, however they have also included an adapter should you still be running Tamiya batteries. You also get two midcap magazines, a PEQ battery case, and a verical grip.