Mossberg 500 12GA 24 Fully-Rifled Slug Barrel w/Cantilever Mount Matte – 92256. 24 Slugster barrel with cantilever mount, fully-rifled bore, and matte blued finish. Compatible with 12 Gauge Mossberg 500 and Maverick 88 6-shot models. Note: Not directly compatible with 500 Cruiser #54125 or 500 Chainsaw #50460. Choke Size- Fully Rifled Bore. Barrel Finish- Matte Blued. Not Threaded for Interchangeable Chokes.