The XS Shot Rail for the Mossberg 500, 590, 930 Shotgun offers excellent features. Anodized aluminum construction is compatible with weaver or picatinny rings, and drop on installation (if holes are drilled and tapped into receiver). The ring rear sight is precision machined from steel proof steel with elevation and windage adjustment. The banded standard dot tritium front sight provides high visibility in all lighting conditions.
Does not fit on Heavy Barrel, only barrels with diameter 0.840" - 0.860"