This is the G&G Combat Machine AEG CM16 SRS and comes with MOSFET & ETU.
The Mosfet latest version ( electrical trigger) gives a faster rigger action and will prevent any locking up
which can happen during rapid fire shots.It has a superb 3 round burst which is really superb. It has a metal
rail system and SC-AR flash suppressor, sling loop at rear and 6 position for the stock