Winchester Model 12 20 Gauge Pump-Action, 26 in Winchester Proof Steel, 1939 Takedown, Slam-Fire Capable, Adjustable Muzzle Choke
This 1939 Winchester Model 12 is a pre-WWII 20-gauge takedown shotgun with classic lines and practical updates. It features a 26 in Winchester Proof Steel barrel in a plain configuration and an aftermarket adjustable muzzle choke device installed. The gun retains its blued steel receiver, right-side ejection, and internal hammer, and it is slam-fire capable. Walnut furniture includes a ribbed forend and an uncheckered pistol-grip stock fitted with a solid rubber recoil pad and black spacer. Capacity is 6+1, and the chamber is 2 3/4.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Good - Clean, well-maintained, minor wear marks.
Specific Condition Notes: This firearm is in solid shape. It has various cosmetic imperfections, scratches, blemishes, and areas of finish loss. The bore remains clean and shiny.
What’s Included
- Adjustable muzzle choke device (installed)
- Solid rubber recoil pad with black spacer (installed)
Built in New Haven, Connecticut, this Model 12 carries the period barrel address and Winchester Proof Steel marking. The barrel was originally marked FULL but now wears the installed adjustable choke, with the single front bead mounted on the muzzle device. The plain 26 in barrel, right-side ejection, and internal hammer reflect the traditional Model 12 format.
The takedown configuration includes a separable barrel and magazine assembly with a takedown collar, making transport and maintenance straightforward. A barrel/magazine clamp is present, and capacity is listed at 6+1 with a 2 3/4 chamber.
Controls and operation are true to the era, including a pump-action system that is slam-fire capable. Sighting is simple and fast with a front bead only and no rear sight.
Walnut furniture consists of a ribbed, uncheckered forend and an uncheckered pistol-grip buttstock. The stock wears a solid rubber recoil pad with a black spacer and circular maker’s medallion, and length of pull measures 14.5 in.
External markings include an adjacent W stamp near the serial number. The blued steel receiver and barrel reflect the Model 12’s durable construction from the pre-WWII era.