Any "facta non verba" info on these launchers  http://www.ftfindustries.com/product/ET-37M203-HB.html

Also found a few sites with 37mm ammo for builds:

http://www.americanspecialtyammo.com/37mm_Reloading.html

http://www.mlrdistributing.com/37mm-Reloadable-Shells_c20.htm

https://exoticammo.com/products/37mm-aluminum-hulls-for-reloading?variant=21123493443

Any more?

BB

Bob,

what's your question?

That looks like the first gen launchers; I have one similar, but don't know if the barrel composition / length is the same.