Mossberg 930 Semi-Auto 12 Ga w/ 13rd Conversion Kit

$65,808.00

A versatile, gas-operated 12-gauge semi-auto shotgun. Includes both a standard 5-round and extended 13-round magazine tube, making it a high-value choice for hunting, clays, and home defense.

Description

Picture this: you’re at the range, your shoulder is starting to feel the thump from your old pump-action, and the guy next to you is effortlessly running through a course with his semi-auto. You think a reliable autoloader is out of your budget. Here’s the thing—it doesn’t have to be. The Mossberg 930 Semi-Auto 12 Ga 28″ Barrel Black Receiver Black Synthetic Stock 13rd Plus 5 rd Conversion is the workhorse answer, offering proven performance without the premium price tag of some competitors.

The Mossberg 930 Semi-Auto 12 Ga 28″ Barrel Black Receiver Black Synthetic Stock 13rd Plus 5 rd Conversion is a gas-operated, 12-gauge shotgun built for reliability and high-volume shooting. It comes configured from the factory with a 28-inch vent-rib barrel for target and field use and includes a kit to convert the magazine capacity from a standard 5-round tube to an extended 13-round tube for tactical or competition scenarios. This dual-purpose setup is a cornerstone of its value proposition, giving you two capable shotguns in one affordable package priced at $658.08.

Let’s talk about the core of its appeal: the gas-operated system. Mossberg’s design uses dual gas pistons to manage recoil effectively, making long days of shooting clays or waterfowl far more pleasant than with a recoil-operated or pump gun. The included capacity conversion kit is a huge part of the “bang-for-buck” here. You start with a perfectly serviceable 5+1 setup for hunting or sporting clays, which keeps the weight down to a manageable 7.5 pounds. When you want to switch to a home defense or 3-gun practice configuration, the extended magazine tube is drop-in ready, requiring no gunsmithing. Just swap the cap and you’ve instantly got a 12+1 capacity platform.

Durability is where Mossberg has always shined, and the 930 is no exception. The black synthetic stock is tough and weather-resistant, while the matte black finish on the receiver and barrel shrugs off the elements. The 28-inch barrel features a vent rib with a single, removable bead sight—perfect for acquiring flying targets. The controls are classic Mossberg, including the tang-mounted safety that’s ambidextrous and easy to reach. It’s a simple, no-frills design that just works, and it’s compatible with a wide array of aftermarket parts and chokes made for the Mossberg 930 series.

Specification Detail
Gauge 12 Gauge (3″ Chamber)
Action Semi-Automatic, Gas-Operated
Barrel Length 28″ Vent Rib
Overall Length Approx. 48.5″
Weight Approx. 7.5 lbs
Capacity 5+1 Rounds (Standard), 12+1 Rounds (w/ Extended Tube)
Stock Black Synthetic
Included 13-Round Extended Magazine Tube Conversion Kit

Pros: Exceptional value for a dual-role semi-auto. The included capacity kit is a major cost-saver. Gas operation reduces felt recoil noticeably. Proven Mossberg reliability and familiar controls. Ready for field, range, or defensive use right out of the box. Cons: The synthetic stock may feel utilitarian compared to wood. As with any gas gun, it requires more consistent cleaning than a pump to run reliably long-term. The 28-inch barrel is ideal for hunting and clays but can be cumbersome for tight indoor spaces.

So who is this shotgun for? It’s for the budget-conscious hunter who wants a soft-shooting waterfowl gun but also wants a capable home defender without buying a second firearm. It’s for the new clay shooter looking for an affordable, reliable autoloader to learn on. It’s even for the practical prepper or recreational shooter who values versatility above all. If you need one shotgun to do several jobs well and your wallet is a primary concern, this Mossberg 930 configuration is a compelling choice. This model is available at firearms-missouri.com for Missouri residents and nationwide, following all applicable laws.

Frequently Asked Questions

Q: Is the extended magazine tube difficult to install?

A: Not at all. The conversion is designed to be user-installed. Simply unscrew the cap on the standard magazine tube, slide on the included spring and follower for the extended tube, screw on the new, longer tube, and you’re done. It’s a five-minute job with no special tools required.

Q: Can this shotgun reliably cycle light target loads?

A: Yes, that’s a key benefit of the gas-operated system. It’s designed to cycle a wide range of 12-gauge loads, from light 2¾” target loads up to 3″ magnums, by self-regulating the gas pressure. For the most reliable function with the lightest loads, just keep it reasonably clean.

Q: What chokes does it use, and are they included?

A: The shotgun uses Mossberg’s Accu-Choke thread pattern (also compatible with Carlson’s and other aftermarket brands). It typically comes from the factory with one choke tube installed—often a Modified choke—but you should verify what’s included. Additional chokes are readily available and affordable.

If you’ve been waiting for a practical, versatile semi-auto shotgun that doesn’t force a compromise between your needs and your budget, the Mossberg 930 with its dual-capacity kit deserves a close look. See the full details on our site.

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