My Sig 556. Converted with the GWS kit from a Marui 552 and painted with DuraCoat in Magpul Flat Dark Earth. The optic is a 4x32 ACOG replica, none of that FAKEOG reddot nonsense. Gearbox has a Systema overhaul with torque up gears, bore up cylinder, cylinder head, piston head, nozzle, piston, AR latch, spring guide, bearing bushings, and medium magnum motor. The hopup unit is Marui with a Madbull M4 length TB barrel. With that setup it's running a Madbull M120 spring that I think was mislabeled, it's shooting 450-455.
Anyway, here's the pictures.
Something you may have noticed
