30" side-by-side modified/full choke.
See the picture of the vintage catalog add at the bottom for more detail.
I bought this several years back but don't shoot enough to keep it. Condition is excellent. The gun came with the cool old leather case when I purchased the gun. The case is a little beat up, but it's kept the gun in good condition.
Please let me know if you have any questions. voice/text: (503) 747-8352
According to the Internet, this add is from 1927, and if the it's on the Internet, it must be true.