Description
When deer season rolls around and you want to run slugs through your Mossberg pump instead of buying a whole second shotgun, this is the swap that gets you there. This is a genuine OEM Mossberg 24-inch slug barrel built for 20 gauge Mossberg 500 and Maverick 88 6-shot models. It carries a smooth cylinder bore, adjustable rifle sights, and a classic blued finish that matches the look of your existing gun. Same platform, new purpose.
What the Mossberg 90060 Slug Barrel Brings to the Field
The adjustable rifle sights are the star here. A bead is fine for wingshooting, but when you are placing a single projectile on a deer's vitals at 50 or 75 yards, being able to tweak windage and elevation makes a real difference. You can sight it in with your preferred load and trust it. The cylinder bore is a smooth, open bore, which is exactly what you want for rifled Foster or Brenneke style slugs. That smooth bore also keeps you flexible, since it handles the widest selection of 20 gauge slug loads without fuss.
Fit and Setup on Your 500 or Maverick 88
Swapping barrels on a Mossberg 500 or Maverick 88 is one of the easiest jobs in shotgunning. Unload, back off the magazine cap, slide the old barrel off, and drop this one on. No gunsmith, no tools beyond your hands. This barrel chambers up to 3-inch shells, so you have room for heavier slug loads when you want the extra punch. Pair it with rifled slugs rather than sabots, since sabot slugs are meant for fully rifled bores and won't group well out of a smooth bore.
If you already trust your Mossberg for birds or home defense, this barrel lets that same familiar gun pull double duty as a capable short-to-mid range slug gun for whitetail. It is a straightforward, budget-friendly way to add real versatility to a platform you already know.
Key Specifications
- Manufacturer: Mossberg
- Manufacturer Part Number: 90060
- UPC: 015813900607
- Model: OEM
- Gauge: 20 Gauge
- Barrel Length: 24 in
- Bore: Cylinder Bore (Smooth)
- Chokes Included: None – Fixed Cylinder Bore
- Sights: Adjustable Rifle Sights
- Finish: Blued
- Max Chamber: 3 in
- Product Type: Slug Barrel
- Compatibility: Mossberg 500 and Maverick 88 6-Shot Models
- Material: Steel
What’s Included
- Mossberg 90060 24-inch 20 gauge slug barrel with adjustable rifle sights and cylinder bore
Frequently Asked Questions
Which shotguns does the Mossberg 90060 slug barrel fit?
This barrel is designed for 20 gauge Mossberg 500 and Maverick 88 6-shot models. It is a genuine OEM Mossberg part, so it drops onto those platforms without modification. Always confirm your receiver is a 6-shot 20 gauge before ordering.
What kind of slugs should I run through this cylinder bore barrel?
Stick with rifled slugs, often called Foster or Brenneke slugs, since they are made for smooth bore barrels like this one. Sabot slugs are built for fully rifled barrels and will not group well out of a smooth bore, so save your money there. The open cylinder bore actually gives you a nice wide selection of slug loads to test and find your favorite.
Is it hard to swap this barrel onto my Mossberg?
Not at all, barrel changes on a Mossberg 500 or Maverick 88 are one of the simplest tasks in shotgunning. You unload the gun, unscrew the magazine cap, pull the old barrel, slide this one into place, and tighten the cap back down. No tools or gunsmith required.
Can this barrel handle 3-inch shells?
Yes, it is rated for up to 3-inch chambered loads. That gives you the option to run heavier slug loads when you want more energy on target for larger game or longer shots.



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