Thunder B Airsoft CO2 Simulation Grenades First Strike Rounds These inserts not only alter

These inserts not only alter the sound signature but also minimize ball breakage

Designed and constructed to provide peak performance during on the field

The lower receiver also features an adjustable back strap which allows the user to either install the slim line or swelled strap to contour perfectly to their hand

- Everything is 100% compatible to G&G and Marui series AEG's

Thunder B Airsoft CO2 Simulation Grenades First Strike Rounds These inserts not only alterFeatures Low impact CO2 air burst is safe and effective One time use shells are easy to replace Non pyrotechnic design ideal for use in all weather and environments Core design uses replaceable 12gram CO2 cartridges Fits in many different style "flash" grenade pouches Hakkotsu Thunder B grenades have been the industry leading standard in non pyrotechnic simulation grenade distraction devices for years. Thunder B grenades use a safety pin spoon design