Hakkotsu Thunder B CO2 Sound Effect Airsoft / Paintball Simulation Grenade Core Bolts There is 3 settings for

There is 3 settings for the red dot and also a left and right and up and down setting too

The M2 MOSAir upgrade board allows the user to custom build their own firing mode

Flip-up front and rear sights can be used as primary sights or as backups to aftermarket optics as well

Hi tension locking system keeps stock in the desired position

Compatibility: M4/M16 and other compatible Airsoft AEGs

Hakkotsu Thunder B CO2 Sound Effect Airsoft / Paintball Simulation Grenade Core Bolts There is 3 settings forA Thunder B is an Airsoft simulation grenade that emits noise. It holds a standard 12 gram CO2 cartridge in a fully sealed compartment. Upon pulling the pin, the fire lever, or spoon, snaps down puncturing the CO2 cartridge and starts releasing the pressure from the cartridge until the shell breaks due to air pressure inside the shell resulting in a loud pop sound. The Thunder B Spare Core is perfect as a replacement set and also allows you to have