The Browning Maxus II RTO is a premium semi-automatic shotgun engineered for reliability and performance with a 12 gauge platform and 3.5" chamber capability for versatile ammunition options.Browning Maxus II RTO Semi-Automatic Shotgun12 gauge with 3.5" chamber (handles 2.75" and 3" shells)26" vent rib barrel for improved heat dissipationInvector-Plus Extended choke system with Full Improved Cylinder and Modified chokes includedHiViz Tri-Comp Fiber Optic front sight with white mid beadLightning trigger system for crisp consistent performanceAdjustable shim stock for custom fit4-round capacity (2.75" shells)Lightweight 7 lb construction with 47.38" overall lengthIdeal for waterfowl hunting upland game and sporting clays with its versatile chamber system and precision choke configuration for optimal pattern performance.