The Dominator-1 Package Includes The following: * Mil-Spec Forged 7075 Aluminum A3 Upper Receiver With Correctly Cut Feed Ramps For Military Type M4 Barrels. Complete With Forward Assist And Ejection Port Cover. Upper Receiver Is T-Marked * A2 Back Up Iron Sight With Locking Detent * 16 Inch Chrome Moly M203 Contoured Barrel With 1-9 Twist Rate And Flash Hider. Barrel And Chamber Are Chrome Lined And Have Been High Pressure And Magnetic Particle Tested. Mil-Spec Gas Tube And Delta Ring Assembly. * Newly Designed Flip Up Front Sight With Locking Detent Mechanism, Bayonet Lug And Ambi Sling Swivel. Tactical Modular Forearm Complete With Rails And Foregrip Panels. * Recoil Cross Slots Of Upper Receiver And Tactical Modular Forearm Are Sequentially Numbered. (T-Marked) * Aluminum Components Have Been Type III Hard-Coat Anodized Matte Black Per Mil-Spec. * Steel Components Have Been Manganese Phosphated Matte Black Per Mil-Spec. * Fully Assembled And Headspaced, Ready for Your Bolt Group And Lower Receiver.