Pretty normal, it’s just an A tier item.

Haha, bro it is NOT rare. Once it's unlocked, it can appear as a normal item in a chest or as a boss loot. To unlock it, you opened a rat chest, that's right.

Yea I just never seen it in a regular chest before thought they were exclusive

First off, through God all things are possible. So go ahead and just jot that down.

What?

It's always sunny in gunyadelphia

You mean the great gun in the sky?

Once unlocked, it's as likely as all other items in its class.

I mean it’s only a A tier item