ULTIMATE OPTIC SOLUTION - Mounting optics to your gun may seem like a straightforward task, but what if your optic needs a Picatinny/Weaver-style mount & your gun cannot accommodate this type of fitting? Here comes TruGlo offering a Picatinny Optic Rail COMPATIBILITY POSSIBILITIES - It is constructed to accommodate Picatinny and Weaver-style rings or mounts and brings real mounting versatility; This reliable Picatinny Optic Rail is compatible with Mossberg 500 / 590 / 590A1 / 835 and 930 series GREAT CONSTRUCTION - This durable rail by TruGlo is made using CNC-machined aircraft-grade aluminum for years of reliable service; It also features an anodized Matte Black finish to compliment the whole look of the gun and optic combination EASY TO MOUNT - Picatinny Rail for Optics features easy to install design that does not require any modification; Intuitively simple and convenient this accessory mounts and holds valuable optics securely; It comes with screws and a wrench included MUST-HAVE ACCESSORY - Avid shooters often seek out the versatility of mounting choices as a key feature they cannot ignore; This rail which is utilized with drilled and tapped receivers to create a Picatinny mount base is an absolute must-have