Arken Cantilever Scope Mount Features The Arken Optics ARP-30Z cantilever mount is fully CNC machined from aircraft grade aluminum a manufacturing process that delivers the highest achievable precision and tolerances in the finished part. Its cantilever design extends the scope forward by roughly 2.5 inches positioning the ocular lens closer to the shooter s eye for the extended eye relief that AR platform rifles commonly need. Built around a 30mm tube diameter the mount matches the growing number of riflescopes using the larger stronger 30mm main tube rather than the older 1 inch standard. A 0 MOA configuration keeps the scope s optical axis parallel to the bore which suits standard range work rather than long range elevation compensation. At 1.5 inches in height the mount positions the scope at a practical sight line over the top rail without forcing an awkward cheek weld on most AR style stocks. Weighing only 5.9 ounces the ARP-30Z adds very little to the overall weight of a build already carrying an optic rings and accessories. Arken recommends torque settings no greater than 18 inch pounds for ring screws and 30 inch pounds for base screws though the optic manufacturer s own torque specification should always take precedence when it calls for more. For shooters building a rigid repeatable optic mounting platform on an AR style rifle the Arken Optics ARP-30Z cantilever mount is available for sale at GrabAGun. Arken Cantilever Scope Mount Specifications Manufacturer: Arken Tube Diameter: 30mm Material: Aluminum Mount Type: Cantilever MOA: 0 Length: 6.6 Height: 1.50 Weight: 5.90 oz Available At: GrabAGun