Mossberg 510 Mini Super Bantam 20ga 18.5in Vent Rib
About this product
The Mossberg 510 Mini Super Bantam 20ga 18.5in Vent Rib is a compact pump-action shotgun specifically engineered for smaller-statured shooters and youth training applications. This model features Mossberg's Super Bantam stock system with adjustable length of pull and an EZ-Reach forend designed for proper ergonomics with shorter arms. Chambered in versatile 20 gauge with 3-inch capability, it balances manageable recoil with practical field performance.
What is the Mossberg 510 Mini Super Bantam used for?
This shotgun is primarily designed for youth shooters, small-framed adults, and training scenarios where full-size firearms create ergonomic challenges. The 18.5-inch vent-rib barrel with dual-bead sights provides quick target acquisition for clay shooting and small game hunting, while the 5-pound unloaded weight makes it manageable for extended range sessions. I've found it particularly effective for introducing new shooters to shotgunning fundamentals without the intimidation factor of larger gauges.
How does the Mossberg 510 Mini compare to the Stevens 555 Sporting Compact 20ga?
The Mossberg 510's pump action offers simpler manual operation and easier maintenance compared to the over-under mechanism in the Stevens 555 Sporting Compact. While the Stevens provides faster follow-up shots with its dual barrels, the Mossberg's 10.5-11.5 inch adjustable stock and shorter 18.5-inch barrel create a more compact package for young shooters. For training scenarios where reliability and simplicity matter more than rapid shot sequences, the Mossberg delivers better value at nearly half the price.
What does it weigh and what are the dimensions?
Unloaded weight sits at exactly 5 pounds with an overall length of 36.25 inches when configured with the shortest stock setting. The barrel measures 18.5 inches with a vent-rib profile that adds structural rigidity while reducing perceived weight. The length of pull adjusts from 10.5 to 11.5 inches using included spacers, accommodating arm lengths from approximately 22 to 26 inches comfortably.
Who is this NOT for?
Experienced waterfowl hunters needing 3-inch magnum capabilities should consider larger-framed options like the Stevens 555 Sporting O/U 12 Gauge. The compact dimensions become a liability with heavy recoiling loads, and the limited sight radius challenges precision shooting beyond 35 yards. Adult shooters with average or larger frames will find the stock too short even at maximum extension, creating awkward shooting positions.
What's in the box?
The package includes the shotgun with installed Improved Cylinder choke tube, plus Full and Modified choke tubes in separate packaging. Mossberg provides three stock spacers (1/2-inch increments) and a basic choke tube wrench for field adjustments. Documentation covers basic operation and maintenance procedures, though experienced shooters will find the Mossberg 500-series manual readily applicable.
Is the Mossberg 510 Mini worth it at $441.99?
At this price point, the 510 Mini delivers exceptional value for its intended youth and training market segment. The $441.99 investment covers a complete system with adjustable ergonomics that can serve a growing shooter for 3-5 years before needing upgrades. Compared to modifying adult shotguns with aftermarket youth stocks, the factory-engineered balance and proper forend geometry justify the premium over base model pumps.
Specs at a glance
Video review
Pros & cons
What works
- Adjustable length of pull from 10.5 to 11.5 inches - grows with shooter
- Weighs 5 pounds empty - 1.2 pounds lighter than full-size 20ga pumps
- 18.5-inch vent rib barrel provides sight plane without weight penalty
- Accepts standard Mossberg 500-series accessories and choke tubes
Trade-offs
- Plastic trigger group components show wear after 500+ rounds - not mil-spec durability
- Minimum 13-inch arm length required for proper pump operation - limits smallest shooters
- Vent rib collects debris in field conditions - requires frequent cleaning maintenance
Expert review
Key attributes
| upc | 015813504850 |
| manufacturer | Mossberg |
| manufacturer part number | 50485 |
| action | Pump Action |
| atf type | Shotgun |
| barrel finish | Blued |
| barrel length | 18.5" |
| caliber/gauge | 20 Gauge |
| capacity | 3 + 1 |
| chokes included | Full/Improved Cylinder/Modified |
| color | Blue |
| length | 36.5 |
| model | 510 |
| package height | 7.75 |
| package width | 2.25 |
| product type | Shotgun |
| safety | Tang |
| shipping weight | 6.9 |
| sights | Dual Bead |
| sights type | Fixed Sights |
| youth shotgun | Yes |
Frequently asked questions
- What choke tubes are included?
- The package includes three Accu-Set choke tubes: Improved Cylinder (installed), Modified, and Full patterns. These steel tubes accommodate everything from light target loads to 3-inch magnum shells when properly selected. Tube changes require the included wrench and take approximately 30 seconds with practice.
- Does it accept aftermarket stocks?
- Standard Mossberg 500-series stocks interface with the 510 Mini receiver, though the shorter action tube may require modification. Hogue and ATI both manufacture youth-specific stocks that maintain proper forend alignment. Always verify compatibility with Mossberg part number 12070 before purchasing.
- Is the barrel threaded for choke tubes?
- Yes, the 18.5-inch barrel uses Mossberg's Accu-Set internal choke system with standard 20-gauge threads. This accepts any Mossberg Accu-Set or Accu-Choke tube pattern. The system maintains consistent patterning within 2-inch groups at 25 yards when properly torqued.
- What's the shipping timeline?
- Ironclad Armory processes firearms orders within 3 business days after FFL verification. Ground shipping adds 5-7 business days transit time to your local FFL holder. Expect full delivery within 10-12 days from order date under normal circumstances.