This Airsoft3D product is a science fiction grenade. It is just a toy and does not actually perform any function. Use it for cosplay or movie making. If you use it as a movie prop, we can provide a movie-making license free-of-charge. Contact us. Please do not throw this item at other airsoft/paintball players. Check with your local offical field referee to determine whether this dummy can be used on the airsoft/paintball field. Roll it on the ground if the field allows you to use it. WARNING: Different materials and different size of this product have different strength and flexibility characteristics. Please research the type of material you need for this product before you print one. We are not responsible for the material you choose for the purpose you intent to use it for. WARNING: This product may be mistaken for a weapon by law enforcement officers or other people. Altering the coloration or markings required by state or federal law or regulations so as to make this product look more like a weapon is dangerous, and may be a crime. Brandishing or displaying this product in public may cause confusion and may also be a crime.