Variable Sound Output
The grenade can produce 3 levels of sound. Brown cartridge is loud. Use it for indoor CQB play Green cartridge is really loud. Use it for loud CQB play Yellow cartridge is REALLY F**KING LOUD! Use it for OUTDOOR play only!
The grenade uses cheap .22cal "powder-actuated fastener" nail driver cartridges that you can find at Lowes, Home Depot, Ace Hardware and online. They're only $0.07 each and they're super easy to buy!
Easy Selectable Timer
Twist the timer to one of the 3 desired settings, add cartridge, screw the head on. That's all! Bang 22 is ready to fire. Easy reload.