<https://armysurpluswarehouselexington.com/product/dummy-baseball-grenade/#product>
<http://schema.org/description>
"NON-FUNCTIONING REPLICA FOR USE AS A PROP OR DISPLAY ONLY\r\n\r\nM-67 Baseball Grenade (INERT) is made of cast iron and is hollow with a hole in the bottom.\r\n\r\nBefore ordering this item check with state and local laws regarding possession."
<https://armysurpluswarehouselexington.com/product/dummy-baseball-grenade/>