Mossberg 930 JM Pro-Series Tactical Class 12 Gauge Semi-Auto Shotgun – 24" Barrel, 9+1, 3" Chamber
Built in collaboration with world-renowned speed-shooter Jerry Miculek, the Mossberg 930 JM Pro-Series Tactical Class is purpose-engineered for 3-gun competition. A 24-inch vent-rib, threaded barrel with an Improved Cylinder choke, a factory-extended 9-round magazine tube, and nickel-boron-treated internal parts give this shotgun fast, reliable cycling and competition-ready capacity right out of the box.
Condition
Overall Condition: Fair – showing extensive signs of prior use and handling.
Bore Condition: Poor – noticeable dirt, stains, significant corrosion or damage.
Specific Condition Notes: The tip of the barrel shows significant rust pitting, and the Improved Cylinder choke is rusted in place. External surfaces display handling marks consistent with heavy use. The bore has visible rust and pitting that will require polishing.
What’s Included
- Mossberg 930 JM Pro-Series Tactical Class 12 Gauge shotgun
- Factory-installed Improved Cylinder choke (rusted in place)
The dual-gas piston system moderates recoil and keeps the action running even during rapid strings of fire. Nickel-boron coating on key internals reduces friction and eases cleanup, while the beveled loading port speeds reloads under the clock.
An oversized, knurled charging handle and an enlarged bolt release are easy to find without looking, even when wearing gloves. The tang-mounted safety offers ambidextrous access, and the drilled-and-tapped receiver allows quick optic installation for slug stages or red-dot use.
The synthetic stock and forend are lightweight, impervious to weather, and include molded texturing panels for a sure grip. A 14-inch length of pull and soft recoil pad help shooters of varying builds manage the 12-gauge recoil comfortably during long matches.




