Harris and Klebold were unable to legally purchase firearms due to them both being underage at the time. Klebold then enlisted Robyn Anderson, an 18-year-old Columbine student and old friend of Klebold's, to make a straw purchase of two shotguns and a Hi-Point carbine for the pair. In exchange for her cooperation with the investigation that followed the shootings, no charges were filed against Anderson. After illegally acquiring the weapons, Klebold sawed off his Savage 311-D 12-gauge double-barrel shotgun, shortening the overall length to approximately . Meanwhile, Harris's Savage-Springfield 12-gauge pump shotgun was sawn off to around .