Tactical Rifles’ U.S.-made 7000 series aluminum Chimera Scope Rings are precision-bored to within tolerances of 0.002 inches. Titanium cross bolts and naval brass nuts clamp the rings to military-specification M1913 rails, and six No. 8-32 Torx-head machine screws secure each ring to the scope with 3.75 inches of clamping area. Price: $224.
Contact: Tactical Rifles, Inc.; (877) 811-4867; www.tacticalrifles.net.