KFF Defense Pro Riser Mod 1 Red Dot Sight Mount Black. The Pro Riser Mod 1 is a purpose-built 0.75'' optics riser designed for shooters who run a magnifier/optic combo and demand a zero that stays put. 125percent More Surface Contact Most risers cut corners to save weight. KFF didnt. The Mod 1 offers 125percent more contact with your Picatinny rail than the leading competitor. More surface area = more friction = an immovable platform. The Kinetic Index Notch KFF engineered a proprietary clamping design with a 0.005" clearance notch. By eliminating almost all forward/backward ''slop'' ensured that recoil and impact have nowhere to go. Your zero remains true in conditions that would shift a lesser mount. Redundancy Upon Redundancy didn't stop at the clamp. We added 0.170 square inch grooves for maximized bolt-to-body surface contact. Combined with our 170k PSI steel alloy bolts this isn't just a mount; its a structural part of your rifle. Verified Precision In-house tested with calipers to the nearest 0.0005''. KFF dropped it hit it and hammered it with recoil. It doesn't move. Specifications for KFF Defense Pro Riser Mod 1 Red Dot Sight Mount: Manufacturer: KFF Defense Color: Black Package Contents: KFF Defense Pro Riser Mod 1 Red Dot Sight Mount 1 - US made Allen Key 2 - US made Mounting Hardware 1 - QC Certification KFF Defense KFF-M1-REV1-B: Pro Riser Mod 1 Red Dot Sight Mount Black