Mossberg 500 12 Gauge Pump-Action, 18.5 Inch Barrel, 4+1, Custom Rail, Heat Shield, Breacher, AR-Style Adjustable Stock
This customized Mossberg 500 combines the proven 12-gauge pump-action platform with practical upgrades. Notable additions include a receiver-mounted Picatinny rail, a barrel heat shield, a toothed breacher-style muzzle device, a ribbed forend with hand strap, and an AR-style adjustable buttstock. The two-tone black/tan furniture, matte black metalwork, and U.S. manufacture round out a well-configured 18.5-inch defensive-length setup with adjustable length of pull.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Overall 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.
What's Included
- Mossberg Model 500 12-gauge pump-action shotgun with 18.5 inch barrel
- Receiver-mounted Picatinny rail (installed)
- Barrel heat shield (installed)
- Toothed breacher-style muzzle device/standoff (installed)
- Ribbed polymer forend with hand strap (installed)
- Adjustable AR-style tan polymer buttstock with pistol grip and recoil pad (installed)
The 18.5 inch barrel and 4+1 capacity align with a compact, maneuverable configuration. The right-side ejection port and tang safety preserve the familiar Mossberg control layout, while the standard-length magazine tube retains factory-style operation and a knurled end cap.
The receiver top is drilled and tapped and fitted with a Picatinny rail, providing a solid mounting interface. A steel barrel with matte black finish is complemented by a barrel heat shield and a toothed breacher-style standoff at the muzzle.
The AR-style adjustable stock adds a pistol grip and recoil pad, with length of pull positions at approximately 11 inches and 14 inches to fit different users or gear. Two-tone synthetic furniture in black and tan provides a practical and durable setup.
The alloy receiver and matte black finish tie the build together, while details like the "M500" marking on the stock-to-receiver adapter and the polymer ribbed forend with hand strap emphasize control and handling. Made in the United States, this configuration presents a ready, feature-rich take on the Mossberg 500 platform.




