Most of the Remington shotguns are not drilled and tapped for scope mounts. We do not recommend having this type of alteration done to a receiver that did not come from the factory drilled and tapped.
Suggestions for mounting a scope are a saddlemount which mounts over the receiver, or a cantilever barrel.
You can view a list of Remington extra barrels through our online store at www.shopremingtoncountry.com.
The following after-market dealers may be a source for saddle mounts.