Magnifyers

[etisll40]

Does anyone have a good set up, compact as possible for using a low power long eye relief scope or aimpoint whereas you can quickly snap on a magnifier. I'd like 4-6x long relief or scout scope and then to be able to snap down a magnifier ahead of it to get out to say 200 yards with reasonable precision. This would be good on my 460 hunting revolver. I have a rail on it.

IDEAS or experience with this set up? Does it exist?