The FN SLP (Self-Loading Police) shotgun is the world's fastest cycling tactical shotgun. The smooth gas-operated action offers exceptional reliability and substantially reduced felt recoil for the fastest possible follow-up shots; it makes the FN SLP ideal for 3-gun practical competition. The Mark I model has a matte black finish on all metal surfaces, an active valve gas system, and a two-piece bolt. Its receiver is constructed of aircraft-grade aluminum alloy with a top-mounted Cantilever Weaver-rail. The hard-chromed bore barrel features standard Invector interchangeable choke tubes. The synthetic stock utilizes a non-slip recoil pad and two steel sling swivel studs, while the forearm and grip has checkered gripping panels. The Mark I also features a crossbolt safety, extended magazine tube with aluminum tube cover, and low-profile, adjustable folding rear blade and red fiber-optic front sights. Included is a Cylinder and Improved Cylinder choke tubes. This 12 gauge model has a 22" barrel.