Firearm Upper Receiver

FIG. 1 is a left side view of a firearm upper receiver showing the new design in a use configuration with environment;

FIG. 2 is a top rear left isometric view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof;

FIG. 9 is a bottom front left isometric view thereof;

FIG. 10 is a top rear right isometric view thereof; and,

FIG. 11 is a bottom front right isometric view thereof.

The dashed broken lines and the unshaded area within them depict portions of the firearm upper receiver that form no part of the claimed design. The dashed broken lines in FIG. 1 depicting the environment of a firearm lower receiver form no part of the claimed design. The dot-dash-dot broken lines depict the boundaries of the claim that form no part thereof.