The "Josh" AR-15 .50 BMG Mod is able to fire all kinds of .50 BMG ammo, has a durability of 100 000, an extremly high rate of fire and is very easy to craft. Not sure if this is intended.

Mh, okay.

Question: Is the issue page the right place for me to mention things like that? Should I even mention things like this generally?

well yes this is absolutely intended, but it is absolutely getting nerfed one day

Josh started off as a "secret" item since the anvil it's made in didn't have NEI integration. Yeah maybe I should change that.

Should I even mention things like this generally?

If it's a big deal like something being broken (and I suppose this would count) then yes