The GPS series (Geometric Pump System) pump shotgun is an icon in the making. The GPS is offered in 12ga 3 chamber while the GPS-XL is chambered in 12ga 3.5. Both the GPS and GPS-XL offer rock-solid performance and durability from Retay\'s exclusive floating-forearm technology a dual slide rail dual latch action that allows for ultra-fast cycling for quick follow-up shots when you need them. The GPS line offers first-in-its-class features like fully drilled barrels with elongated forcing cones for improved pattern density interchangeable chokes dovetail optics mount and Retay\'s 5-year Limited Warranty. C-M-F choke tubes are included.