Mossberg 91303 535 12 Gauge 24" Mossy Oak Break-Up Country Adjustable Rifle This 535 shotgun barrel has a adjustable rifle sights and a mossy oak break-up country style finish. Caliber or Gauge: 12 Gauge Length: 24" Model: 535 ATS Sights: Adjustable Rifle Bore Type: Fully Rifled Finish: Mossy Oak Break-Up Country Type: Slug