If open sight use is the intention, you might just be able to reshape that butt-stock by removing the saddle-bag.
Might even be enough meat in that fat pistol-grip to contour it properly too....

Excellent bore, nice! I can see a marvelous 'hill rifle' hiding in there somewhere.

Gibbs markings on the nock's form are certainly desirable too!
Any chance a new barrel has been "sleeved" into the breech-end of the original worn-out barrel?
Haven't noticed that little 'step' behind the rear sight base in MS sporters before.