Firearm Upper Receiver

FIG. 1 is a front-right perspective view of a firearm upper receiver.

FIG. 2 is a front-left perspective view of the firearm upper receiver of FIG. 1 .

FIG. 3 is a right-side view of the firearm upper receiver of FIG. 1 .

FIG. 4 is a left-side view of the firearm upper receiver of FIG. 1 .

FIG. 5 is a front view of the firearm upper receiver of FIG. 1 .

FIG. 6 is a rear view of the firearm upper receiver of FIG. 1 .

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

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

The broken lines depict portions of the firearm upper receiver that form no part of the claimed design.