The Mossberg 500 Series 24" barrel is designed for 20 gauge shotguns with a 3" chamber capacity and features adjustable rifle sights for improved accuracy.Mossberg 500 Series compatible 24" slug barrel20 gauge with 3" maximum chamber sizeAdjustable rifle sights for precision shootingCylinder bore choke configurationDurable blued finishSKU: MOSB-90060Ideal for slug hunting and precision shooting applications where accuracy and reliability are essential. The cylinder bore design optimizes performance with slugs and buckshot loads.