Mossberg 930 12 Gauge Semi-Auto, 18.5 in, 7+1, Custom Build with Extended Top Rail, Mag Tube Extension, and Breacher-Style Muzzle Device
This customized Mossberg 930 stands out with an 18.5 in threaded steel barrel, an extended vented aluminum handguard/heat-shield with a full-length Picatinny top rail, and a breacher-style ported muzzle device/choke. It features a magazine tube extension for 7+1 capacity, a fixed synthetic pistol-grip stock with a Choate Tool-marked recoil pad, and a short Picatinny receiver rail segment installed. The 930 series dual gas-vent operating system and drilled-and-tapped aluminum-alloy receiver round out a configuration built for reliable semi-automatic performance and versatile accessory mounting.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Good - Clean, well-maintained, minor wear marks.
Specific Condition Notes: There are scratches in the finish throughout. The bore is bright and clean.
What's Included
- Mossberg 930 12 Gauge semi-automatic shotgun
- Extended vented aluminum handguard/heat-shield with full-length Picatinny top rail (installed)
- Short Picatinny receiver rail segment (installed)
- Magazine tube extension with knurled end cap (installed)
- Breacher-style ported muzzle device/choke (installed)
- Fixed synthetic pistol-grip stock with Choate Tool-marked recoil pad (installed)
The 18.5 in threaded steel barrel is paired with a breacher-style ported muzzle device/choke and a front bead sight on a low pedestal. The receiver is drilled and tapped and includes a short Picatinny rail segment, while the shotgun retains right-side ejection.
An extended, vented aluminum handguard/heat-shield adds a full-length Picatinny top rail for accessory placement and improved heat dissipation. This setup complements the aluminum-alloy receiver and matte black finish for a consistent, durable exterior.
The magazine tube extension increases on-board capacity to 7+1 and features a knurled end cap for secure handling. A cylindrical charging handle and an ambidextrous top tang safety support intuitive manipulation.
Ergonomics are centered on a fixed synthetic pistol-grip stock with finger grooves and a Choate Tool-marked recoil pad. The 13.25 in length of pull offers a compact, controllable fit.
At the core is the Mossberg 930 series dual gas-vent operating system, delivering semi-automatic, gas-operated cycling. Steel barrel construction and an aluminum-alloy receiver provide a strong foundation in a matte black finish.




