For Winchester Model 70 standard caliber action rifles with rear hole spacing of .860 inches, Talley Manufacturing's Winchester Model 70 Scope Mounts provide an innovative and straightforward one-piece scope ring and base solution. The risk of a "out of alignment" interface or "loose connection" between the ring and base of conventional two-piece designs is eliminated by this streamlined mounting solution. Overall, this is lower in weight and offers more strength and longevity than competing steel rings and bases. This sturdy scope mounting platform doesn't need to be lapped and is ready to use right out of the box thanks to its complete CNC machining from lightweight aircraft-grade aluminium to the closest tolerances in the industry.