Complete AR15 5.56 upper comes FULLY ASSEMBLED with a 5.56 NATO barrel, capable of shooting both .223 and 5.56. With an Anchor Harvey Upper and an XTS Hand Guard with full length top picatinny rail and M-LOK accessory mounting hardpoints. Includes: ANCHOR HARVEY Upper Receiver 5.56 NATO BARREL 16.5" XTS Charging Handle XTS Forward Assist XTS Ejection Port Cover 15" M-LOK RAIL Black Gas Block Gas Tube Bird Cage Muzzle Brake STATE RESTRICTION NOTICE This product may be regulated as an "assault weapon" feature or component (e.g., threaded barrel, muzzle device/compensator, or assembled upper) and may be restricted or prohibited in CA, CT, DC, HI, IL, MA, MD, NJ, NY, RI, VA, WA, and select municipalities. It is the buyer's responsibility to verify local, state, and federal laws before purchase. Orders that cannot ship to a restricted address will be canceled and refunded.