Check out these usage videos: https://bit.ly/HopupFrag This is the airsoft grenade you have been waiting for. Want to throw 20 grenades in a weekend and only spend $2 to reload it? This is the grenade that is cheap to refill, and is inexpensive enough that if you lose it you won’t be upset. All other airsoft grenades cost multiple dollars per throw, some of the one time use cost up to $10 per throw. This grenade uses cheap Adult Snappers (Sold Separately), which usually costs 10 cents (or less) per snapper. You can buy them in boxes of 20 in every state. This is an airsoft impact grenade, meaning It goes off when it hits the ground or hard surface. It comes with a safety pin that must be pulled before throwing the grenade at the ground. To reload the grenade the top trigger screws off, insert a new snapper, replace the trigger and it is ready for another throw. This can easily be done in the middle of a game so you can get multiple hits in a single game. This is 3D printed, made out of PLA, and while it is reusable, it is NOT indestructible. There are replacement triggers available if needed, check out other listings. Also, do not store this in a hot car, the material will deform under high heat. This is not a toy. Adults 18 years and older only. Always where eye protection and gloves when loading and using the grenade. Never throw directly at another player or animal.