Made of high-quality aluminum alloy and constructed with the ultra-strong one-piece tube, this scope is durable. Compatible with 12 Gauge Mossberg 500 / 590 / 835 shotguns.The mount bolts into existing holes on your shotgun with included mounting screws.Simple bolt-on installation with included Mounting Screws. With a 4x magnification in this scope, you can clearly view the object from a long distance and shoot accurately. Multi-coated lenses reduce light reflections, enabling better light transmission for good visibility. The exterior black matte finish on this compact riflescope offers a smooth and stylish look. Includes a set of matching matte black color Aluminum scope rings mounts that will fit most Weaver / Picatinny type rails. This mount will accept most Weaver/Picatinny style scope rings and similar accessories. Various cross slots act as a recoil lug and also provide some room to adjust the eye relief on your particular choice of optics. *Details of Bipod:- Picatinny Adapter Included Coming with the Picatinny adapter, these precision grade bipods will fit onto a Picatinny rail on the forearm of the rifle perfectly. Upgraded Mount Tension Screw The bipod is built with upgraded mount tension screw which is high strength and has deep enough threads to hold tension. 5 settings of the leg length The bipod legs have 5 notches. You can extend and lock the bipod legs to any of the notches you desire by slightly pressing the button. Foldable design The springs on the legs make it easy to fold the legs up and are not over tightened which makes easy work of keeping silent when hunting. Superior Quality Made from aircraft aluminum alloy 7075, with a non-rusting black anodized finish, the bipod is lightweight, strong and built to last.