A million five Model 12 would not have the "open and smallish" pistol grip, nickel steel barrel, nor would it be equipped with short chamber. It will have the modern style tight pistol grip and 2 3/4 inch chamber suitable for all modern 16 gauge store bought shells. It will also have a Winchester Proof Steel barrel. Sounds like a nice shooting $375.00 gun in a scarce barrel length/choke combination.