I got one from e-gunparts.com, which is Numrich. They have schematics for many guns.
Date code stamped on left side of barrel, go to Remington Society of America for diagram and chart.
It's an off-branded Stevens Model 311, worth $150-$250, made between 1920 and 1948.
describe the type of shotgun and recheck the serial number
50 Bucks...
Model designation
Hopkins & Allen
$250-$350
This shotgun is in the neighborhood of 100 years old. There is fairly extensive information online available on this shotgun.
There is no diagram except the one stamped on the inside of the fuse box cover.
I need vaccum diagram for this
If it is a double, remove barrel and you will see it along with serial #.
On a Riverside Arms 16 gauge shotgun, the serial number is typically located on the underside of the receiver or frame, often near the hinge or where the barrel meets the receiver. Additionally, some models may have the serial number stamped on the barrel itself, closer to the breach. It's advisable to check these areas carefully, as the exact location can vary slightly between models.