Remington Rolling Block rifle

Remington Rolling Block is a family of breech-loading rifles that was produced from the mid-1860s into the early 20th century by E. Remington and Sons (later Remington Arms). These rifles were made in a variety of calibers, both rimfire and centerfire, including the 12.17x42 mm rimfire, 12.17x44 mm rimfire and 12.17x44 mm rimmed centerfire Swedish and Norwegian cartridges, .43 Spanish (11.15x58mmR), .50-70, .40-70, .45-70 and later in .22 caliber.

Source: Wikipedia — Remington Rolling Block rifle (CC BY-SA 4.0)