Remington Model 878 Automaster 12 Gauge Semi-Auto Shotgun, 30 in Plain Barrel, Fixed Full Choke, 2 3/4 in Chamber
This Remington Model 878 Automaster is a U.S.-made, gas-operated 12 gauge from the Automaster series, produced circa 1959–1963. It features a 30-inch plain steel barrel with a fixed FULL choke, a self-adjusting gas system unique to the 878 design, and a 2+1 capacity. Patent numbers 2,645,873 and 2,675,638 are roll-marked on the barrel. SELLING AS IS.
Condition
Overall Condition: Poor condition.
Bore Condition: Poor - Noticeable dirt, stains, significant corrosion or damage.
Specific Condition Notes: Selling as is. The firearm is in poor shape. The wood furniture is extensively worn. The receiver finish is worn and scratches are present. The original barrel has a large bulge and is unusable; it needs to be replaced.
What's Included
- Remington Model 878 Automaster 12 Gauge semi-automatic shotgun
The Model 878 Automaster uses a self-adjusting gas system, delivering the semi-automatic operation that defined this series. It has right-side ejection with a bolt handle and an under-barrel tubular magazine capped by a knurled end, providing a 2+1 capacity.
This example is configured with a 30-inch plain (non–vent-rib) steel barrel and a fixed FULL choke. A single front bead provides a simple sight picture, complemented by a matted sighting plane on the receiver.
The shotgun is chambered for 2 3/4-inch shells. The receiver is steel, and the stock is wood with a straight-comb, uncheckered profile and a Remington-branded buttplate. Length of pull measures 13.75 inches.
As part of the Automaster series, approximately 63,500 Model 878 shotguns were produced between 1959 and 1963. Notable details on this barrel include the roll-marked patent numbers 2,645,873 and 2,675,638, underscoring the design lineage of the action.