The Improved Carbine rifles are the next step in the evolution of the AR platform.Fully ambidextrous lower has dual controls for bolt catch bolt release magazine release and safeties. Monoforge upper receiver with integrated rail base is strong and light. As with all LWRCI rifles the top rail is easily removable without tools allowing access to the piston components while preserving a repeatable zero. Scalloped cut rail for easy access to 2 position adjustable gas block. Includes LWRCI Skirmish flip-up iron sights.12? User configurable rail systemShort stroke gas piston system with 2 position gas blockNiCorr treated spiral fluted cold hammer forged barrelNickel Boron coated bolt carrier & ambidextrous charging handleMagpul MOE GripA2 flashhiderMagpul Pmag includedLWRCI Adjustable compact stock with QD mount