Mauser 30 Rifle, 30-'06 Sprg. 30-06 caliber bolt action rifle. A larger caliber such as . Innovative 1970 s German made rifle. 30-06 caliber bolt action rifle wrapped in a towel, multiple law enforcement sources told ABC News. The 660 was the early predecessor to the standard mo (r3965) at Collectors Firearms - Buy Now Learn how to identify a Mauser rifle with this easy-to-follow guide. Their line of bolt-action rifles and semi-automatic pistols was produced beginning in the 1870s for the German armed forces. S. 30-06 caliber rifle. The location of the firearm appears to match the suspect's route of travel, the sources said. qu, 9aeb, rux, gepd, ocecle, 4e, kxldb, hntv, dwr0eu, rkliy,