New Mossberg Pro -Factor 2 Choke Tube Improved Cyclinder Ported 12 gauge Black High Quality Unique Mossberg: Introducing the all-new PRO-FACTOR choke tubes, a massive lineup of precision-machined chokes, designed to fit the needs of just about every hunter or shooter, and covering many models and makes. A wide variety of flush and extended ported tube configurations are offered, including Skeet, Improved Cylinder, Modified, Full, X-Full, and XX-Full constrictions. This company is an elite one in its field and provides very good customer service. New Mossberg Pro -Factor 2 Choke Tube Improved Cyclinder Ported 12 gauge Black High Quality Unique