Remington 870 Police Magnum 12 Gauge, 18 in Cylinder Bore, 3 in Chamber, Agency-Marked TPD 131
This Remington 870 Police Magnum is a duty-configured 12 gauge pump-action shotgun with agency property marking "TPD 131." It features an 18-inch plain, fixed cylinder-bore barrel with a front bead and a 3-inch chamber, plus an aftermarket Knoxx adjustable pistol-grip stock designed to mitigate recoil. The steel receiver is roll-marked "Remington 870 POLICE MAGNUM," and the matte gray/green Parkerized (phosphate) finish completes its service-ready build.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Good - Clean, well-maintained, minor wear marks.
Bore Fouling: Mild Fouling - Light buildup of fouling or dirt.
Specific Condition Notes: The shotgun shows significant handling and use marks on the exterior surfaces. The bore is bright and clean. Please refer to the photos for a closer look at the noted wear and markings.
What's Included
- Remington 870 Police Magnum 12 Gauge pump-action shotgun
Receiver and barrel are steel with a matte gray/green Parkerized (phosphate) finish. The receiver is factory roll-marked "Remington 870 POLICE MAGNUM," and the gun carries an agency property/inventory marking "TPD 131," confirming law-enforcement provenance.
The 18-inch barrel is plain with no rib and a single front bead. It has a fixed cylinder bore and is stamped "12 GA. 2 3/4 or 3," providing a 3-inch chamber for 2 3/4-inch and 3-inch 12 gauge shells.
An aftermarket Knoxx-branded adjustable buttstock with a pistol grip is installed. This polymer stock is recoil-mitigating and set to a 12.5-inch length of pull. A synthetic ribbed polymer fore-end completes the duty furniture.
The shotgun uses a standard-length magazine tube with a knurled cap and a front sling swivel stud. Capacity is 4+1. Sighting is via a straightforward front bead, matching the plain, cylinder-bore defensive configuration.




