I thought so. I've thought about buying a 12 gauge stock and then MAKING it fit my 20 gauge, but I never had the guts to potentially ruin the stock if it didn't work. This opens up alot more options.
I really like the Urbino stock, but I'm leaning more toward the SGA because it will make it easier to manipulate the slide release. I want things to be as simple as possible during a crisis situation.