Retay GPS XL 12 Gauge 3" 28" Barrel Mossy Oak Bottomland The GPS series (Geometric Pump System) pump shotgun is an icon in the making. The GPS-XL is chambered in 12ga 3.5". The 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.