The M870 is a pump-action shotgun designed and manufactured by Remington Arms. It is widely used by military, law enforcement, and civilian shooters due to its reliability and versatility. The shotgun typically features a smooth bore barrel and can fire various types of ammunition, including birdshot, buckshot, and slugs. Introduced in 1950, the M870 has become one of the most popular shotguns in the world. It is available in several configurations, including tactical and hunting models, making it suitable for different applications. Its robust construction and ease of use contribute to its enduring reputation in firearms history.