Not a A1 because They are a part of the receiver and cannot be detached.
The A2 ( or SA ) I believe we'll fit and lineup with the boat holes but it will not have the front lock up the A3m1 and it will look funny.
So I found a few scopes for sale, one must not be a A1 since both are detachable. Odd thing is the bolt holes from the picture do not look like they are right, I could be wrong though. I am thinking of running Cold War in a competition and to do so I would need to fix the scope and take off my Corvus gear then should be good to go. Guess I was looking to see if it would work since I can’t find a anniversary edition that doesn’t cost a arm and a leg anywhere. These are the two scopes I saw.