Warne 1-Piece MSR cantilever mounts are constructed from 6061 T6 aluminum for a lightweight and rigid foundation. Steel threaded inserts ensure steel on steel contact between all threaded interfaces, and MSR Ideal Height helps the shooter maintain a peroper cheek weld and shooting position with any optic on flat top guns The LR-SKEL Mount offers 20 MOA built-in slope for long range precision shooting. This allows additional elevation adjustment in your optic when shooting ranges over 600 yards and will also maintain the superior, Return-to-Zero, scope mount capability that Warne is known for.20 MOA built-In for precision long-range adjustmentsLightweight, skeletonized aluminum body and caps to reduce overall weight without sacrificing reliability#8 Torx style fasteners with steel threaded inserts to prevent strippingExtended design provides over 2 inches of forward cantilever for additional eye reliefPlaces the optic at the IDEAL HEIGHT for MSR and similar style platformsDual 1/2" tactical nut attachments, 65 in/lb of torque recommended