Compatible with Mossberg® 500® model barrels within gauge and capacity. Include a cross-bolt safety in front of the trigger for speed and convenience. Choke tubes are fully interchangeable with Mossberg® Accu-Choke™ tubes. Barrels are equipped with 3" chambers and handle factory 2¾" and 3" loads. Barrels and choke tubes are capable of firing lead, steel or other non-toxic loads. Dual extractors and twin action slide bars for positive, non-binding extraction and ejection. Free Cablelock included with each model. One-year limited warranty.