The Flex 500 Tactical series is a Modular System of shotguns based on the legendary model 500 with the LTS (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 features black, OD Green, or tan finish on the barrel and receiver. The stocks and forends are black and are available in pistol grip, adjustable, or fixed. All the forends are tactical tri-rail.