I always wanted a 16 gauge M37 and stumbled across one recently that is a bit of an odd configuration. A 1938 S in full choke. I honestly didn't know what I had until I got home, just knew it was a 16 with a vent rib and the price seemed fair. I'm a big fan of more open chokes and almost passed because of the full choke. Seems odd someone would order a skeet gun in full but I think likely they just wanted the vent rib and I don't think they made the trap version in 16 gauge. Downside is the stock has been cut down to 13" with a pad. I've got a slip on pad on it temporarily to get it back close to standard but haven't had a chance to shoot it yet.