[BBG_Theory]

It is from Duke Nukem

"ability2"
{
"name" "rage_new_weapon"
"arg1" "tf_weapon_shotgun"
"arg2" "10"
"arg3" "2 ; 9 ; 5 ; 1 ; 266 ; 99 ; 150 ; 1 ; 25 ; 0"
"arg4" "0"
"arg5" "3"
"arg6" "1"
"plugin_name" "special_noanims"

probably, or a boss config that has this rage_new_weapon