Features:
The world's first practical GAS BLOW BACK machine gun
Ultra-lightweight aluminum alloy main structure design,only 3640g.
The independent gas supply and BB supply system is more suitable for games.
The simulated aluminum bolt carrier, having better performance.
The open bolt designed and ready to fire, which is full of simulation.
Realistic take down barrel design, and field strip operations, full of fun to play, easy to maintain.
Equipped with the ammo belt vibration  system.
Switch for dry fire and auto stop when out of ammo.
It can use different type of gas supply modules.
Infornmation:
Model: M249
Materials: Steel, Zine Alloy, Nylon, Rubber
Length: 910mm
Weight:3640g (8 pounds)
Power Source: GBB
Action: Semi/Auto
Ammo Type: 6mm airsoft BBs
Ammo Capacity: 100 round magazine
FPS: 400