Leupold 1-Piece Mark 4 8-40 Adaptable Steel Scope Base 20 MOA - Savage 10/110 Round Receiver LA - Matte Black

Leupold mounts are every bit as rugged and dependable as the Leupold optics they_re intended to secure. With a huge variety of mounting systems, for nearly every type of firearm under the sun, you_re sure to find the perfect match for you firearm, and your style of shooting. MOUNTING LARGE RIFLESCOPES ON LARGE CALIBER FIREARMS WITH CONVENTIONAL 6-48 SCREWS IS NOT IDEAL, AS THE INCREASED RECOIL AND SCOPE WEIGHT CAN OVER-STRESS THE SMALLER SCREWS AND LEAD TO POSSIBLE FAILURES. MORE RUGGED, 8-40 SCREWS INCREASE MOUNT STRENGTH BY 41%. Leupold_s Mark 4 8-40 Adaptable Mount - lso available in a 20-MOA Long-Range Shooter version - is the first mount that can accommodate both the 8-40 screw and a modified 6-48 shoulder screw. Larger through holes accept the thicker 8-40 screw, while the standard 6-48 screw has been replaced by a shoulder screw to work with the larger opening. This gives you the flexibility to mount your rifle with the common 6-48 screw size, or drill and tap your gun to accept the 8-40 screws. These bases will fit Winchester PBR, Remington Super Magnum, HS Precision, and other 8-40 rifles without modification. (Some firearms will not work with these adaptable mounts)