The ornamental design for a railstocksystem for firearms, as shown and described.
FIG. 1 is a perspective view of a rail stock system for firearms, showing our new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left-side elevation view thereof;
FIG. 5 is a right-side elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a reduced perspective view of the rail stock system for firearms, shown in use.
The broken lines showing a firearm in FIG. 8 depicts environmental subject matter that forms no part of the claimed design, while the remaining broken lines shown in the drawings depict portions of the rail stock system for firearms that form no part of the claimed design.