The 12-gauge, 3-inch chambered FNH USA Self-Loading Police Mark 1 features an extended eight-shot magazine tube and a 22-inch barrel equipped with the Standard Invector interchangeable choke tube system. Two choke tubes (Cylinder and Improved Cylinder) are included as standard equipment to optimize performance with any payload. The gas operation of the FN SLP series is known for its reliability, cycling speed and light felt recoil, making it ideal for a wide variety of law enforcement, tactical, personal security and practical competition roles. The FN SLP Mark 1's aircraft-grade alloy receiver helps create a durable, lightweight shotgun tipping the scales at eight pounds. A crisp, quick-resetting trigger and large, easily accessible crossbolt safety button at the rear of the trigger guard serve to enhance operator confidence.