Mossberg 92010 20 Gauge 24" Slug Barrel w/Cantilever Mount, Fully-Rifled Bore, Blued Finish, 3-9x40mm Scope, Fits Mossberg 500 & Maverick 88 6-Shot Models
- Firearm Make Fit:
- Mossberg
- Caliber-Gauge:
- 20 Gauge
- Finish-Color:
- Black
- Barrel Length:
- 24"
- Model:
- OEM
- Sights:
- Cantilever Scope Mount
- Barrel Type:
- Slug
- Bore Type:
- Rifled
- Choke Configuration:
- Invector
The Mossberg 92010 is a fully-rifled 20 gauge slug barrel purpose-built for hunters who want to transform their Mossberg 500 or Maverick 88 shotgun into a dedicated slug gun. At 24 inches, this barrel strikes the balance between maneuverability in tight cover and enough sight radius for accurate aim. The fully-rifled bore stabilizes saboted slugs for tighter groups downrange, making it a smart choice for whitetail hunters who need precision beyond what a smoothbore delivers. If you already own a Mossberg 500 or Maverick 88 with a 6-shot magazine tube, this barrel lets you keep your base gun in the truck or blind and swap to a serious slug setup when the opportunity demands it.
The cantilever mount sits atop the barrel, giving you a true optic-friendly platform without the need for gunsmithing or permanent modifications. The included 3-9x40mm scope arrives already integrated into that mount, so you can head to the range or field without hunting down a separate scope—it's a complete solution. The blued finish matches the weathered character of a workhorse shotgun and resists corrosion well enough for field use, though like any blued steel, it rewards regular cleaning and light oil.
Swapping barrels on a Mossberg 500 or Maverick 88 is straightforward: remove the foregrip, slide out the old barrel, slide in the new one, and reattach the grip. Within minutes you've got a slug gun. This is the kind of versatility that turns a jack-of-all-trades shotgun into a focused hunting tool without forcing you to buy a second firearm.
Key Features
- Fully-rifled 20 gauge bore for stabilized slug accuracy
- 24-inch barrel—compact enough for brush hunting, long enough for sight radius
- Cantilever mount for optic mounting without drilling or tapping
- 3-9x40mm scope included and mounted
- Blued finish
- Fits Mossberg 500 and Maverick 88 with 6-shot magazine tubes
- Quick-swap design—no tools required beyond a screwdriver for the foregrip
Specifications
| Gauge | 20 |
| Barrel Length | 24 inches |
| Bore | Fully-Rifled |
| Finish | Blued |
| Mount | Cantilever |
| Included Scope | 3-9x40mm |
| Compatibility | Mossberg 500 & Maverick 88 (6-shot models) |
Frequently Asked Questions
Will this barrel fit my Mossberg 500 or Maverick 88?
Yes, the Mossberg 92010 is designed for Mossberg 500 and Maverick 88 shotguns with 6-shot magazine tubes. Confirm your shotgun model before ordering. Barrel swaps on these platforms are straightforward and require no gunsmithing.
Do I need to buy a scope separately?
No. The 3-9x40mm scope is included and mounted to the cantilever rail, ready to use out of the box.
Why would I choose a rifled slug barrel over the smoothbore that came with my gun?
A fully-rifled bore stabilizes saboted slugs more effectively than a smoothbore, yielding tighter shot groups and better accuracy at distance. This is especially valuable for hunters pursuing medium-to-large game where precision matters or when taking longer shots.
Is this 20 gauge barrel compatible with a 12 gauge Mossberg?
No. This is a 20 gauge barrel and will only function on 20 gauge Mossberg 500 or Maverick 88 shotguns. Using the wrong gauge creates an unsafe condition and will not function.

