electric m4 zm81b fps-280 airsoft rifle(Airsoft Gun) Velocity (Approx): 375 FPS w/ .12g 300 FPS w/ .20g Range (Approx): 125+FT Scale: 1:1 Full Size Condition: New In Box Hop Up: Yes (Adjustable) LiPo Powered Ammo: 6mm .12g .20g .25g .28g or Heavier Removable Carry Handle Top RIS Rail Tokyo Marui High Torque Metal Motor Upgrade Tactical Sling Mounts Semi or Full Automatic Select-A-Fire Full Metal Barrel Retractable 5 Position LE Stock