I want to extend the buttstock on the rifle kit.
Most butt extensions will cost more than the whole kit! LOL!
Just drill a hole (or holes) in the center, get a threaded rod (s) and make your own extension.
An Aluminum plate can get a proper buttpad glued on. If you drill one hole you will have adjustable cant.
If you drill two holes you will have adjustable pitch.
Just some ideas.