The WE M4 GBBR is an affordable, reliable, and customizable entry into the Gas Blowback M4 market. Featuring fully metal externals, as well as a steel bolt catch, the WE M4 kicks hard and snappy with every crisp pull of the trigger, while also being extremely gas efficient from its extremely lightweight magazines. 

Length: 665mm-750mm, Adjustable
Weight: 3100g
Inner Barrel: ~250mm
Magazine Capacity: 32rd Open Bolt WE GBB Magazine
Muzzle Velocity: 410~460 FPS (Measured with 0.20g BBs and Green Gas)
Thread Direction: 14mm Negative
Gas Type: Green Gas, Red Gas, Propane
Fire Modes: Semi / Full-Auto, Safety
Package Includes: Gun, Magazine, Manual
Hopup: Yes, Adjustable