First US metallic cartridge military rifle converted from muzzleloaders. Hinged breechblock opens upward like a trap door. Model 1873 served through the Indian Wars and Spanish-American War. Type: Rifle Action: Single-Shot Caliber: 45-70 Govt Capacity: 1 Year introduced: 1873, USA Weight: 128 oz Overall length: 51.9" Status: Discontinued Military use: Yes Intended use: Military, Collector, Hunting