Mossberg 590A1 Speedfeed 12 Gauge Pump, 18.5 inch Heavy-Walled Cylinder Bore, 3 inch Chamber, 5+1 Capacity
This Mossberg 590A1 Speedfeed is a 12 gauge pump-action shotgun configured with an 18.5 inch heavy-walled cylinder bore barrel, a 3 inch chamber, and a 5+1 capacity. It features the Speedfeed stock with integral shell carriers, a drilled and tapped receiver for mounts, and durable black synthetic furniture. Receiver and barrel markings confirm North Haven, Connecticut manufacture and the 12 GA, 2 3/4 and 3 inch chambering.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Specific Condition Notes: There are handling marks from previous use consistent with moderate use. Please refer to the photos for a closer look at cosmetic details.
What’s Included
- Owner's manual
The 18.5 inch heavy-walled barrel is marked for 12 GA and accepts both 2 3/4 and 3 inch shells. Its cylinder bore provides an open choke profile well-suited to defensive roles. A simple bead front sight keeps the sighting system fast and uncluttered.
The Speedfeed stock integrates shell carriers within the butt, offering on-gun spare ammunition access. The buttpad is molded with "SPEED FEED / MOSSBERG," and the stock includes a rear sling swivel stud. Length of pull is 14.0 inches, accommodating a broad range of shooters.
The receiver is drilled and tapped for mounts, giving the user mounting options if desired. Receiver markings read "M590A1" and "Mossberg — Made in U.S.A. — North Haven, Conn." The ribbed synthetic forend provides a secure grip for positive cycling.
The shotgun uses Mossberg's tang-mounted safety for intuitive operation. The overall matte finish and black synthetic furniture contribute to a low-glare profile and practical durability. Capacity is 5+1 with 2 3/4 inch shells, and the platform remains straightforward and robust.




