Geonox Airsoft reviews a MK18 AEG with upgrades, the SAC Specna Arms SA E19 Edge Daniel Defense MK18 AEG... "In this video we look at the SAC Specna Arms SA E19 Edge Daniel Defense MK18. It is an SA E19 Edge, which comes with a spring quick-change system and very tight air-seal internals. In addition, a Gate Titan was installed here, a Davinci barrel, a Nova Speed Trigger, a Super High Torque motor and 13:1 MIM steel speed gears."