Burris Rimfire/Airgun Rings 1 in. Medium Aluminum Available in solid steel or aluminum;Available aluminum rings create lightweight mounting solutions;Fits .22 grooved receivers;Use with rimfire and airgun optics;Durable, with strong gripping power;Available in High Deluxe Steel Matte Black, Medium Aluminum, Medium Deluxe Steel Matte Black, Medium Deluxe Steel QD Matte Blacktable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Item Category Code: 4000 Product Group Code: 4000C Product Sub Group 1: 4000C2 Inactive: No