The Remington XP-100 is a bolt-action pistol produced by Remington Arms from 1963 to 1998. The XP-100 was one of the first handguns designed for long-range shooting and introduced the .221 Fireball and 6×45mm. The XP-100 was noted for its accuracy and is still viewed as competitive today in the sport of handgun varminting, which it helped create, as well as in metallic silhouette shooting.