Combined Rifle Upper and Lower Receiver

FIG. 1 is a right front upper perspective view of upper and lower receivers showing the new design in an environment of use with a shoulder stock, grip, magazine, rifle barrel and hand guard. FIG. 2 is an enlarged right front upper perspective view of the upper and lower receivers. FIG. 3 is a left rear lower perspective view of the upper and lower receivers. FIG. 4 is a right side elevational view of the upper and lower receivers. FIG. 5 is a front end view of the upper and lower receivers. FIG. 6 is a left side elevational view of the upper and lower receivers. FIG. 7 is a rear end view of the upper and lower receivers. FIG. 8 is a top view of the upper and lower receivers; and, FIG. 9 is a bottom view of the upper and lower receivers. The broken lines in FIGS. 2 - 9 illustrate portions of the article that form no part of the claimed design. The additional broken lines in FIG. 1 depict environmental structure that forms no part of the claimed design. Unshaded areas between broken and solid line structure forms no part of the claimed design.