The Revolution is POFs 308 that handles like a 5.56 because it is the same size and weight as one by using a 5.56 bolt carrier and other 5.56 parts allowing for a shorter overall receiver size and reduced weight. The Revolution features many 5.56 parts such as charging handle bolt carrier cam pin buffer heat sink barrel nut handguard and 5position gas piston operating system. The barrel extension bolt assembly upper and lower receiver are the exact same size as those on an AR15. This 6.5 Creedmoor model is built on the Gen 4 lower receiver with a burnt bronze metal finish a 14.5 MLok MRR freefloat handguard and POFs standard 4.5 lb. dropin trigger."