-No scopes or lenses may be attached to the rifle.
-As long as your sight doesn't contain lenses, you're in good shape. Light filters are allowed on front, rear, or both sights.
-If you shoot right-handed with your left eye (or vice versa), you may use a prism or mirror to allow you to see the sights.
-You can hang a blinder from your rear sight, no more than 30mm (1.18") high and no longer than 100mm (3.94") from the center of the rear sight.
So you'll definitely want to look into some kind of custom sight setup for your rifle.

