Patent ID: 7856749

Claim:
A panel system for covering a lengthwise segment of an elongate firearm T-rail the firearm T-rail comprising a T-shaped cross-section, the top of the T corresponding to the top of the T-rail, and the firearm T-rail further comprising a plurality of transverse slots in the top spanning the length of the T-shaped cross-section, the panel system comprising: at least one pair of panel halves, each panel half comprising: a body having a top, a bottom, an abutting proximal edge and a distal edge; at least one axial tongue extending from the abutting proximal edge; an axial groove corresponding to each axial tongue defined in the body, each having a groove mouth associated with the abutting proximal edge; a cantilevered clip extending from the abutting proximal edge; a clip receptacle defined in the body; and a proximally extending lip on the body bottom near the distal edge, each panel half being configured so that with the abutting proximal edges of a pair of panel halves brought into abutment, each axial tongue of each panel half is received in a corresponding axial groove of the other and each cantilevered clip engages the clip receptacle of the other.