The Andro Corp Industries ACI-15 M4 is a modern sporting rifle built with the high quality components and are made to perform multiple uses under a wide variety of conditions. High quality components like a 7075 Forged lower, 4150 CMV melonite Barrel, QPQ Corrosion resistant finish, and 7075 T6 MilSpec Dry Film Lubed Upper make these rifles durable and dependable for the long haul. Just like similar AR-15 style sporting rifles, ACI-15 rifles are easy to accessorize with a near limitless number of accessories. FeaturesM16 Bolt Carrier GroupA2 Flash HiderA2 Front SightM4 HandguardM4 StockForward Assist