Ninja Grey Ghost Carbon Fiber Tank (68-4500) makarov You can quickly change and

You can quickly change and adjust key functions of the engine via the on-board FCU (Fire Control Unit) which is no bigger than an AEG's MOSFET and can easily fit inside of a rifles battery compartment along with a small Li-po battery

It features a metal receiver and microswitch trigger for fast engagement

Hop Up Type: Adjustable

Elite Force Gas Blowback UMP Description: Velocity: 340-350 Full Metal Internals Polymer Exterior Folding Stock Safe

Ninja Grey Ghost Carbon Fiber Tank (68-4500) makarov You can quickly change andDescription: Ninja Grey Ghost Carbon Fiber Tank (68 4500) Made in the USA! D. O. T. and T. C. Approved 5 Year Hydro Weight with brass bonnet 3. 0 pounds, 10 1 2 inches long x 4 1 2 inches wide