Lwrc ic-enhanced 5.56 nato 16" 30rd black FEATURES-Black-Monoforge(TM) upper receiver with LWRCI(TM) modular rail system is stronger and lighter-9" user-configurable rail system for easy customization-IC Enhanced provides easy access to 2-position adjustable gas block-16.1" cold hammer-forged NiCorr-treated spiral fluted barrel-1:7" RH twist-Skirmish(TM) sights-Short-stroke gas piston system-Enhanced fire control group is Nickel-Boron coated-Advanced trigger guard is oversized to allow for easy operation with gloves-Adjustable compact stock with integrated quick detach points-High efficiency flash hider-Ambidextrous charging handle Other Features: Piston operated, cold hammer forged, spiral fluted barrel, 9" modular rail, skirmish sights, ambi charging handle, ambi controls, two position gas block, aluminum upper/lower receiver