Tokyo Marui g3 mc51 in great shape with Tokyo Marui optic mount and rare Tokyo Marui red dot sight. Also I just installed the following upgrades Shs 13:1 gears, asg infinity 2200 high torque motor, shs green piston with 1.5 teeth removed, 90d sorbo for aoe correction, radiused gearbox, metal ball bearing spring guide, m120 spring, guarder steel bushings. This is well tuned and will make a perfect cqb weapon.