5KU CNC Aluminum Type 2 Lightweight BBU Blowback Unit For Action Army AAP 01 GBB Airsoft (Blue) Inner-Barrel-Length-(mm)_133 and made it one of

and made it one of the indelible icons of the Vietnam War

CNC 6061 Aluminum Construction (hard black anodize finish)

Element LA-5C UHP APPEARANCE VER-Green Laser (Dark Earth)

Suitable for G&P M4 AEG/ TM Spec M4 AEG/ M203 Launcher

5KU CNC Aluminum Type 2 Lightweight BBU Blowback Unit For Action Army AAP 01 GBB Airsoft (Blue) Inner-Barrel-Length-(mm)_133 and made it one ofAn airsoft blowback unit is a mechanical system that simulates the recoil of a firearm in an airsoft gun. When a BB is fired, the blowback unit uses some of the air pressure generated by the shot to move a portion of the gun's slide or bolt back and forth, creating a recoil effect that mimics the action of a real firearm. Blowback units are most commonly found in gas powered airsoft guns, where the expanding gas is used to both propel the BB and