This is the Gen5 edition of the Amoeba AM-013 M4-style AEG airsoft rifle that shoots 6mm BBs.
Suggested battery: 9.6V 1600
Weights a light 5.35 lbs
Adjustable length: 24.75 - 29 inches
Barrel is 12.25 inches long
Selector Switch: Semi-auto / Full-auto
Velocity with 2.0g = 395 fps