The American Defense Delta QD Scope Mount is made for putting high power glass onto a SCAR or flattop style AR10 rifle. The AD-DELTA is a straight up scope mount with no eye relief built in. It is precision machined from 6061 T6 aluminum and finished in hard coat T3 Mil-Spec anodize. Horizontal rings. Adapted to the FN SCAR program; approved by SOCOM. NSN 1005-13-121-5535 It features the Patented QD Auto Lock(tm) Lever system to accommodate both in-spec and out-of-spec rail systems. The AD-DELTA-L mount is ideal for most bolt action or chassis builds where you need to get your optic as low as possible on your rifle. The DELTA-L has integrated recoil lugs to assist in distributing the recoil into the lugs in addition to the QD-Lever system. The DELTA-L is compatible with the DELTA ring caps for adding a secondary red dot or picatinny mounted item. FeaturesAuto Lock Lever SystemNo Proprietary Tools Needed for AdjustmentCompatible with Delta Ring Caps for Adding a Red Dot