Fully custom ICS CXP Pro Line transform-4 AEG -Fully built internals: Ported aluminum piston head, Systema polycarbonate piston, Lonex Titan motor, Burst Wizard King Kong Super 2 MOSFET, 13:1 upgraded gear ratio, Evike M120 spring (360-450 FPS), 6.01 tight bore barrel. - Accessories: Red/Green dot sight, 4x magnifier, PEQ box (for battery storage), vertical grip.