Medium. The short is 1/2" less, and the long 1/2" more.
You need the assistance of a gunsmith
No, never. Browning did not make any recoil pads standard on any A5 except the Mag12. For an extra fee, Browning would install it for you at their shops in the US, but it is not factory and was not imported from Belgium with a pad.
It is impossible to stop recoil.
Factory or aftermarket?
Factory applied or aftermarket?
Best left to a good gunsmith
Best left to a good gunsmith
Try Midwest Gun Works
It would have come with a hard plastic buttplate with the word 'BROWNING' on it.
Perhaps the Browning Customer Service Dept can answer your question. Try the link below.
Possible, but, have a gunsmith check it out.
Give it a good cleaning, check the recoil spring.