The only Rolling Block pistol adopted by the US Army, used for cavalry carbine-replacement trials. The large single-shot pistol in 50 caliber was awkward by later standards but represented innovative thinking about cavalry sidearms. Type: Pistol Action: Single-Shot Caliber: 50 Remington CF Capacity: 1 Year introduced: 1871, USA Weight: 46 oz Overall length: 14" Status: Discontinued Military use: Yes Intended use: Military Trials, Cavalry Service