Rock Island Arsenal production M1903 Springfield. Generally considered slightly lower quality than Springfield Armory but still an excellent rifle. Lower serial numbers are case-hardened receivers. Type: Rifle Action: Bolt-Action Caliber: 30-06 Springfield Capacity: 5 Year introduced: 1903, USA Weight: 183 oz Overall length: 43.2" Status: Discontinued Military use: Yes Intended use: Military, Collector