This Aero Precision Ultralight 30mm Scope Mount, SPR is an ideal mounting solution for those looking to properly secure an optic to their gun while adding minimal weight to their build. For a lightweight yet rugged construction, Aero Precision machined these Riflescope Mounts & Bases from 6061 T6 extruded aluminum, Hard Anodized finish to further enhance their strength and corrosion resistance. The rear ring on this Aero Precision Ultralight 30mm Rifle Scope Mount, SPR is moved forward an extra 2in to provide extra eye relief for a more comfortable approach. You can mount this platform on AR-type uppers with Mil-Spec 1913 Picatinny rails, and the cross-slot keyway provides plenty of recoil protection to keep your scope secured even on powerful firearms. Get the Aero Precision Ultralight 30mm SPR-Profile Mount to tightly secure glass to your weapon while keeping it as light as possible.