Complete Gun version:
Marui G17-Gen4 blowback system (Gen4 Nozzle+re-design housing for strong blow back.)
Full CNC Aluminum FMG9 slide and Fixed barrel.
GM-G18C hammer housing with full steel G18C firing control parts. (Full compatible with TM18C)
All consumables parts are all TM/GM spec , very easy to get.
Conversion Kit version :
For Marui G17/G18C Gen3/G17-Gen4(Drop in).
With WE/VFC. (May need minimum modification )
PS: with or without full auto depends on the gun you put in .