For attaching various optics to the Mossberg 500 shotgun, this M1913/Picatinny-style rail is installed using factory screw holes on top of the receiver (1997 and later Model 500's). The standard rail is for general optic mounting with a standard profile stock, while the tall rail is for use with the Mesa Tactical High Tube stock adapter. Both are constructed of 6061-T6 aluminum and are hard anodized. 5.5" x .84" x .63"
Dimensions:( L x W x H)
Designed for use on 1997 or later Mossberg 500 shotguns
To use on a pre-97 Mossberg 500 or other shotguns, consult your gunsmith for receiver tapping