Rock Island Arsenal produced M1903 rifles alongside Springfield Armory. Rock Island production is identified by the RIA marking on the receiver. Like early Springfield production, low serial number Rock Island rifles used the same problematic heat-treatment process. Type: Rifle Action: Bolt-Action Caliber: .30-06 Springfield Capacity: 5 Year introduced: 1903, USA Weight: 99 oz Overall length: 43.2" Status: Discontinued Military use: Yes Intended use: Military, Collecting