Geissele Automatics URG-I, Near Clone, Complete Upper Receiver, 5.56 NATO, 11.5" Barrel, 1:7 Twist, Surefire 4 Prong Flash Hider, Desert Dirt Color 10.5" 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 H3 Buffer 08-315