Looks good to me. If you bought the gun real cheap you have money towards the sight All in all, the rifle sight is not a huge problem for a wall display. YOU know it's not right, but 98% of casual viewers won't have a clue - and you need a nice-looking one, which won't be easy or inexpensive. Just having a carbine sight - if the patina and color don't match the gun - will look far worse than a matching rifle one which needs close inspection to tell that it's wrong.