FIG. 1 is a left side view of the spray gun handle showing my new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a top plan view thereof; and

FIG. 6 is a bottom plan view thereof; and

FIG. 7 is a perspective view thereof; and,

FIGS. 8-10 shows the spray gun handle in various environments that are disclosed in broken lines forms no part of the claimed design.