The patented graphite barrel is unique to Magnum Research. It provides lighter weight and better heat dissipation than steel and is extremely stiff. Magnum Lite receivers are CNC-machined from a 6061-T6 aircraft aluminum forging and include an integral Weaver-type rail for optics. The bolts are manufactured and machined from heat-treated 4140 steel with tight bolt face depth tolerances for better accuracy. The Barracuda model has a laminated stock and a 10-round .22 LR magazine.