Golden Eagle JG 350 FPS Airsoft M4 Full Metal Lower Receiver Complete with Gearbox, Motor, and Tan Motor Grip
Polymer lower receiver is compatible with Golden Eagle JG brand of polymer upper receivers.
Upgrade-able version 2 metal gearbox and steel gears.
Motor and motor grip included.
Internal spring rated for 330 to 350 FPS (actual FPS will depend upon hop up unit, bucking, and inner barrel used).
Wired to the rear.