The Flex 500 Tactical series is a Modular System of shotguns based on the legendary model 500 with the Tool-Less Locking System. This system consists of three convenient connecting technologies, that come together to bring another level of flexibility to your Tactical shooting endeavors. One locking pen is for the stock, one for the forend, and one for the recoil pad. The Tactical series is set up for any of your shotgun's Personal Protection needs, but easily allows you to change the stock, forend, or recoil pad for a specific need. All Tactical Series shotguns feature tri-rail forends and shortened barrel lengths. This model features a pistol grip stock and a fixed cylinder bore choke with a breacher extension.