I don't really see any reason why not, considering it's almost a copy-paste, and would make it compatible with stuff that search for instances of ItemBow as well.

Dynamic surroundings doesn't provide a drawing sound for the composite bow like the regular bow. There are also some visual effects (like zooming in when drawing the bow) that only apply to ItemBow. I also believe that minecolonies guards can only use bows that are registered as ItemBow.

Just a few examples; I am sure that there are more. Overall the benefits of extending ItemBow would outweigh the drawbacks (if there are any)

Hmmmm... With examples now this sounds reasonable.

Okay. I will solve that in a new version.

Fixed!

Hello, friend!

I didn't extend it from vanilla ItemBow class just because had idea to make crossbows, slingshots, rifles and other ranged weapons registered using only one this class.

Do you exactly have any problems if it is not ItemBow? Is it related to compatibility with other mods?
It could be cool if you give me example of any other mod which can't understand that my bow is a bow. :)