Used KWA VM4 Ronin T6

Check out this cool replica. 

KWA T6 Ronin with a BCM hand stop, Red dot, and small muzzle device, stock internals but super snappy with KWA's variable fps system and their 2.5vm4 gearbox so you can drop in a GATE TITAN with your eyes closed.

Comes with 11.1 v and charger