Geissele Automatics URG-1, Near Clone, Complete Upper Receiver, 556NATO, 14.5" Barrel, 1:7 Twist, Pinned and Welded Surefire 4 Prong Flash Hider, Desert Dirt Color 13.5" SMR MK16 M-LOK Free Float Handguard, Desert Dirt Color Geissele Airborne Charging Handle, Geissele Reliability Enhanced Bolt Carrier Group, Fits AR-15, Anodized Finish, Black, Includes Super 42 Braided Wire Buffer Spring and H1 Buffer Combo 08-159