Looks like a modified inline
True, except the barrel is interchangable.
All the underhammers I ever seen or owned had the hammer underneath striking upward.
Yep. And until Knight marketed in-lines all of the muzzleloaders we saw had hammers. Playing with something different is fun.
Also it looks like the leverage on the trigger is wrong making for a very difficult trigger.
We shall see. The trigger has a mechanical advantage as it's rear rises against the far end of the sear bar. I hope it's enough.