Remington Model 870 Magnum 12 Gauge Pump-Action, 18.5 in Barrel, 7-Round Capacity, Custom Magpul Forend & Birdshead Grip
This Remington Model 870 Magnum is a customized 12-gauge pump-action shotgun set up with practical enhancements. It features an 18.5-inch steel barrel with a plain, non-ribbed profile and bead sight, a 7-round extended magazine tube with clamp, and a receiver-mounted 6-shell side-saddle. The gun is chambered for 2 3/4 inch and 3 inch shells, and wears a matte black/gray finish over its steel receiver and barrel.
The build includes a black polymer birdshead-style pistol grip and a Magpul MOE 870 forend with M-LOK slots. The receiver is marked REMINGTON ARMS CO. ILION, NY with a star symbol, and the serial suffix "M" denotes a 12-gauge Magnum receiver; a D-prefix suggests a 2001 timeframe per Remington references. It retains the 870's twin action bars, right-side ejection port, and cross-bolt safety.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
There are some scuffs and areas of wear present.
What's Included
- Remington Model 870 Magnum 12 Gauge pump-action shotgun
- Magpul MOE 870 polymer forend with M-LOK slots (installed)
- Black polymer birdshead-style pistol grip (installed)
- Extended magazine tube with clamp, 7-round capacity (installed)
- Receiver-mounted 6-shell side-saddle (installed)
The 18.5-inch barrel is plain and non-ribbed with a bead front sight for direct, uncomplicated aiming. The chamber is marked "12GA. 2 3/4" OR 3", supporting both 2 3/4-inch and 3-inch shells. The matte black/gray finish is consistent across the steel barrel and receiver.
Factory markings include REMINGTON ARMS CO. ILION, NY and a star symbol. The serial suffix "M" indicates a 12-gauge Magnum receiver, and the D-prefix aligns with a 2001 timeframe per Remington references. The receiver-mounted side-saddle partially obscures some factory receiver markings.
Customization focuses on practical, ready-to-use features: a Magpul MOE 870 forend with M-LOK slots, a birdshead-style pistol grip, and an extended magazine tube with clamp bringing stated capacity to 7 rounds. The 6-shell receiver side-saddle provides on-gun ammunition storage.
Core 870 attributes remain intact, including the steel receiver with twin action bars, right-side ejection port, and a cross-bolt safety. The result is a compact, durable configuration built on the proven 870 Magnum platform and made in the USA.




