Cloak industries mfr 56 belt fed upper 5.56 nato black
Other Features: Complete upper w/2-position gas block handle,100rd plastic nut sac,100 links w/starter tab,cleaning kit,h3 buffer and spring,flip up iron sights extended bolt & magazine catch ,sling,& savior double rifle bag.Dual feed design allows use with both magazine & belt fed,weighs 7.6 lbs