The ornamental design for a frontrailcover and hand guard assembly for an airsoftgun, firearm, replica firearm, or the like, as shown and described.
FIG. 1 is a front perspective view of a front rail cover and hand guard assembly for an airsoft gun, firearm, replica firearm, or the like, showing my new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a side elevation view thereof;
FIG. 5 is an opposite side elevation view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
Broken lines in the drawings disclose unclaimed subject matter and form no part of the claimed design.