Kel-tec's rdb bullpup design provides a compact, well-balanced rifle featuring a revolutionary downwards ejection and fully ambidextrous controls, enabling it to be fired from both the dominant and non-dominant side.The result is casings eject out of your line of sight for a truly ambidextrous, high performance rifle.The rdb maintains a center of gravity over the grip assembly to facilitate ease of handling and balance.It comes equipped with two integral mil-std-1913 picatinny rails, located above the barrel and on the handguard for mounting accessories and multiple sling attachment points compatible with a hook-style swivel.It is compatible with ar-15 style magazines.This rdb model has a 20.5" barrel and a black finish.It includes a 20-round magazine.Note: scope is not included.Metal Finish: Black NitrideAction: Semi-AutoCaliber: 223 RemBarrel Length: 20.50"Capacity: 20+1Safety: AmbidextrousOal: 30.60"Weight: 7.20 lbsStock Description: Fixed BullpupMuzzle: Flash HiderReceiver Material: PolymerSights: None, Optic ReadyTwist: 1:7"Barrel Length Range: 20" to 21.99"Weight Range: 7 lbs to 7.99 lbsHand: AmbidextrousStock Finish Group: BlackMetal Finish Group: Blued/Black