Description
The Mossberg 500 FLEX Hunting Pump 12 ga 24″ 3″ MOBUI Synthetic Stock OD Green Finish is a modular, multi-role pump-action shotgun built on Mossberg’s proven 500 series. Its core feature is the FLEX system, allowing you to swap stocks, forends, and accessories to configure the shotgun for hunting, home defense, or tactical use without tools. The OD Green synthetic stock provides durability and a low-glare finish for the field. This is a versatile platform ready for your specific mission.
Key Features
- FLEX Modularity: Interchange stocks, forends, and accessories to reconfigure for different roles. No gunsmithing required.
- Proven Mossberg 500 Action: Dual action bars, tang-mounted safety, and a reputation for reliability you can count on.
- 24″ Vent-Rib Barrel: Optimized for hunting with a 3″ chamber, handling everything from light target loads to heavy magnums.
- MOBUI (Mossberg Over-Bored Undersized Improved) Choke System: Delivers tighter, more consistent patterns for improved downrange performance.
- OD Green Synthetic Stock: Tough, weather-resistant, and provides a low-visibility profile in outdoor settings.
Specifications & Details
| Specification | Detail |
|---|---|
| Gauge | 12 Gauge |
| Chamber | 3″ |
| Barrel Length | 24″ Vent Rib |
| Overall Length | Approx. 44.5″ |
| Weight | Approx. 7.5 lbs |
| Capacity | 5+1 (with included plug) |
| Stock | OD Green Synthetic |
| Choke | MOBUI System (Modified tube installed) |
Who This Shotgun Is For
This Mossberg 500 FLEX is for the Missouri hunter who demands one tool that can adapt. It’s for the landowner who needs a reliable scattergun for predator control in the morning and a secure home defense option by night. When it comes to versatility, the FLEX system lets one firearm wear multiple hats. It’s also ideal for the shooter who appreciates the ability to upgrade or personalize their platform over time with a wide range of Mossberg FLEX-compatible components. The 24″ barrel and MOBUI chokes make it particularly effective for waterfowl, turkey, and upland game across varied terrain.
Pros & Cons
Pros: The modularity is the star—change your setup in minutes. Mossberg’s reliability is legendary, with a simple, robust action that cycles under harsh conditions. The OD green finish is practical for concealment in the field. At $447.99, it offers significant value for a feature-rich, American-made pump gun. The system is compatible with a vast array of Mossberg FLEX stocks, forends, and shell carriers, allowing for deep customization.
Cons: The synthetic stock, while durable, may not have the classic feel of wood for some purists. The 24″ barrel is a dedicated hunting length—if home defense is your primary focus, you’ll likely want to use the FLEX system to acquire a shorter 18.5″ barrel. The initial configuration is hunting-centric, so accessing its full multi-role potential requires purchasing additional FLEX components.
Frequently Asked Questions
Q: What does “MOBUI” mean for the choke system?
A: MOBUI stands for Mossberg Over-Bored Undersized Improved. It’s their proprietary choke design that starts with an over-bored barrel diameter, constricting down to an improved cylinder or modified dimension. The theory is reduced shot deformation and tighter, more uniform patterns at effective hunting ranges compared to standard chokes.
Q: Can I put a pistol grip or collapsible stock on this model?
A: Absolutely. That’s the point of the FLEX system. The receiver is designed to accept any Mossberg FLEX-compatible stock attachment. You can swap the full synthetic stock for a pistol grip kit, a collapsible stock like those from ATI, or a traditional hardwood stock—all are drop-in ready. The forend is also interchangeable for adding lights or M-LOK accessories.
Q: Is it ready for a slug barrel for deer season?
A: Yes. One of the biggest advantages of the Mossberg 500 platform is the ease of barrel changes. You can purchase a dedicated, rifled slug barrel with optics mount. Simply remove the magazine cap, swap the 24″ field barrel for the slug barrel, and you have a precise deer shotgun for Missouri’s seasons. It’s a five-minute conversion.
Here’s the thing—a shotgun is a tool, and the best tool is the one you can shape for the job at hand. The Mossberg 500 FLEX in OD Green gives you that foundational capability with proven mechanics. It ships to Missouri and compliant US states, requiring an FFL transfer for firearm purchases. See the full details and configure your next adaptable workhorse at firearms-missouri.com.
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