Firearm upper receiver with rail hand guard

FIG. 1 is a left side perspective view of a firearm upper receiver with rail hand guard showing our new design;

FIG. 2 is a right side perspective view of the firearm upper receiver of FIG. 1 ;

FIG. 3 is a left side elevation view of the firearm upper receiver of FIG. 1 ;

FIG. 4 is a right side elevation view of the firearm upper receiver of FIG. 1 ;

FIG. 5 is a top plan view of the firearm upper receiver of FIG. 1 ;

FIG. 6 is a bottom plan view of the firearm upper receiver of FIG. 1 ;

FIG. 7 is a front elevation view of the firearm upper receiver of FIG. 1 ; and,

FIG. 8 is a rear elevation view of the firearm upper receiver of FIG. 1 .