Swampfox Optics took their proven Hostile Engagement Rings fused them together and created the beefy one-piece Hostile Engagement Mount. Made from 7075-T6 aluminum and finished in matte black hardcoat the Hostile Engagement Mount extends the center of the forward ring 2? beyond the edge of the 1913 Picatinny mounting surface. This configuration is perfect for LPVOs with generous eye relief like Tomahawk and Arrowhead. Low profile T25 Torx bolts provide more clamping power than thumb nuts while integrated recoil lugs ensure everything stays locked down. Built-in RMR footprint mounts at 45? degree angles are threaded 3.5 x 0.6 for installing an offset back up dot sight like Kingslayer Liberty or Justice.7075 Aluminum ConstructionScratch Resistant Hardcoat Oxidized FinishCNC MachinedIntegral 45-degree RMR Footprint Optic MountsT10 Star ring cap screws: 10 inch-pounds torquePicatinny T25 Star Mount Bolts: 35 inch-pounds torqueDiameter Options: 30mmCenterline Height Options: 1.60?Forward offset: 2? From Front of Mount to Centerline of Front RingStandard height for AR-15 and large frame AR rifles1.60" centerline height places optic reticle just above AR-15 iron sights (irons are 1.435" tall)A standard setup for rifles with "in-line" stocks at the same level as the receiver railWill work with precision scopes featuring large 56mm objective lensesRifles with stocks located lower than the receiver rail may need a cheek piece added