[J-Rod]

I'm looking for a rifled slug barrel for a mossberg 500 20 gauge, but I don't want one for a scope, only rifled sights, any suggestions for brand, price, ect.

[jerry]

can't go too wrong with an OEM Mossy.

O.F. Mossberg & Sons, Inc. - Firearms, Shotguns, Rifles, Accessories, and Precision Machining

[GlockMeister]

Try here. Look for 20ga rifled slug barrel under your model. Or you can try searching GunBroker.com Online Gun Auction

O.F. Mossberg & Sons, Inc. - Firearms, Shotguns, Rifles, Accessories, and Precision Machining
The one you want from the above Mossberg link that is, should be item #92062 20ga fully rifled bore, ported, adj. rifle sights, blue,24". Third from the bottom...