Midway USA has Vortex / Seekins Precision Matched Picatinny Rings on sale for as low as $110.49 with free shipping
Vortex Optics 35mm Precision Matched Picatinny-Style - MPN: PMR-35-126
Vortex Optics 35mm Precision Matched Picatinny-Style - MPN: PMR-35-126