Alpha Air "Hostile" - 15/4500 Air System w/ Turbine Pro RegulatorThe HK Army Alpha Air 15ci System is built for players who want the lightest and most compact air setup without sacrificing reliability. Designed for paintball and airsoft, this carbon fiber wrapped bottle delivers solid performance in an ultra portable size that works great for tactical setups, pump play, and lightweight loadouts. The Alpha Air series represents the lightest carbon fiber wrapped bottles released by HK Army. With a smaller profile