The placement of the pins on the side of the frame suggest a pre 1933 striker fired setup I believe.
The 'Apr. 1915 Pat.' often seen on early Stevens shotguns refers to this system and also the cast steel receiver. It was an inexpensive and quick way to build a SxS shotgun.
That system was used in the Stevens shotguns till that time when they switched to the more common sear & internal hammer set up. That new setup made for a different pin pattern on the side of the action and a different cocking arm.
The latter uses a spade or chisel shaped bar in the barrel lug that engages the forward tips of the hammers and lifts them when the barrels are opened to cock them.
The older striker system uses a one piece extractor/cocking piece to cock the strikers when the barrels are opened.
The switch in internal mechanism did not change the Model names on most of the Stevens guns though some were changed during their production for other reasons. Sometimes I think it was just to confuse us!
The Springfield Model 5000 in about 1920,,then became the Model 5100 in 1930/31. The same shotgun with any of it's changes then was renamed the Stevens Model 311 just before WW2.
Proprietary names, Springfield, Riverside, Eastern Arms, and others like Central, Plymouth and contract 'hardware store' names if the order was sufficient are common.
Outward changes in frame contour and profile, lever shapes, stocks ect are common to all the Stevens shotguns and can lead to confusion in ID when in fact you're looking at the same gun.
A true nightmare when trying to get parts for one of these w/o getting inside of it to really see what you have.
The 'Apr. 1915 Pat.' often seen on early Stevens shotguns refers to this system and also the cast steel receiver. It was an inexpensive and quick way to build a SxS shotgun.
That system was used in the Stevens shotguns till that time when they switched to the more common sear & internal hammer set up. That new setup made for a different pin pattern on the side of the action and a different cocking arm.
The latter uses a spade or chisel shaped bar in the barrel lug that engages the forward tips of the hammers and lifts them when the barrels are opened to cock them.
The older striker system uses a one piece extractor/cocking piece to cock the strikers when the barrels are opened.
The switch in internal mechanism did not change the Model names on most of the Stevens guns though some were changed during their production for other reasons. Sometimes I think it was just to confuse us!
The Springfield Model 5000 in about 1920,,then became the Model 5100 in 1930/31. The same shotgun with any of it's changes then was renamed the Stevens Model 311 just before WW2.
Proprietary names, Springfield, Riverside, Eastern Arms, and others like Central, Plymouth and contract 'hardware store' names if the order was sufficient are common.
Outward changes in frame contour and profile, lever shapes, stocks ect are common to all the Stevens shotguns and can lead to confusion in ID when in fact you're looking at the same gun.
A true nightmare when trying to get parts for one of these w/o getting inside of it to really see what you have.
