Lion Fish are an invasive species in the waters off of Florida that have no predators and out compete local fish.
Florida man Courtland Hunt modified his Glock 9x19mm handgun as part of a larger societal effort to curb the lion fish population, in a way most befitting a Florida man.
It features a special muzzle device designed to muffle the shock waves of a gun being fired underwater without being a suppressor to avoid legal barriers.
He attempted to start a business selling these 5 years ago but their website is password locked and says:
Site is in revision for upcoming product release 2022.
So the business is likely dead.
Lionfish hunting isn’t new because they are an invasive species Most folks just use a spear. Water slows down bullets so they are innefective at range. Also salt water is corrosive even if the glock external is polymer this has to be really bad for all those small metal parts that require oil to function properly.