Has anybody used one? I'm thinking one to mount my shooting light under the stock. I've missed my last animal from poi shift mounting my light to the scope. This is what I'm looking at but have a laminate stock and don't really want to mess it up.
http://www.brownells.com/.aspx/pid=41327/Product/PICATINNY-RAIL-ADAPTER
http://www.brownells.com/.aspx/pid=41327/Product/PICATINNY-RAIL-ADAPTER