One-piece, MIL-STD 1913 Picatinny rail allows mounting of a variety of optics and tactical sights on popular Mossberg, Remington, and Benelli shotguns. Streamlined, low profile design installs to the top of the receiver for a smooth “built-in” appearance. Four steel, Williams Gun Sight Company screws secure rail to receiver for exceptional holding power. Precision machined from 6061-T6 aluminum, then mil-spec Type III hardcoat anodized for added strength. Fits shotguns with factory drilled and tapped receivers or receivers custom drilled and tapped for 8-40 threads. 

WILL ALSO FIT: 

500, 535, 930, 935 590, 590A1C IN BOTH 12 & 20GA. 

* FRONT SCREW MAY NEED TO BE TRIMMED ON SEMI AUTO SHOTGUNS. 

Made in Canada.

SKU: MOSS-590-BASE