This rail system offers two or three, 3-slot picatinny rails for Mossberg 590/Shockwave 20-gauge firearms. This kit includes a rail system machined from solid 6061-T6 billet aluminum and steel swivel screw. Both items are coated with color-matched hard-coat black anodize coating to match the firearm's factory finish and for increased durability. Attaches over the magazine cap for an easy 30-second installation. (Optics shown not included)
*Initial Pre-Production Units have Black Cerakote Finish*