The revolution is pof's 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 5-position gas piston operating system.The barrel extension, bolt assembly, upper, and lower receiver are the exact same size as those on an ar15.This model is built on the gen 4 lower receiver with ambidextrous controls, and has a 14.5" mlok mrr free-float handguard, pof's standard 4.5 lb.Drop-in trigger.Metal Finish: BlackAction: Semi-AutoCaliber: 7.62x51mm NATOBarrel Length: 16.50"Capacity: 20+1Trigger: Single-StageSafety: AmbidextrousOal: 34"Weight: 7.35 lbsStock Description: AdjustableMuzzle: ThreadedReceiver Material: AluminumSights: None, Optic ReadyBarrel Description: Match GradeTwist: 1:10"Barrel Length Range: 16" to 16.99"Weight Range: 7 lbs to 7.99 lbsHand: AmbidextrousStock Finish Group: BlackMetal Finish Group: Blued/Black