DescriptionNightforce XTreme Duty Steel RingsMade to our own stringent, uncompromising specifications. Designed to fit Mil. Std. 1913 bases, we machine a load-bearing recoil lug on the grade eight crossbolt. This lug precisely matches the machined cross lug of our Nightforce bases, providing perfect alignment and superior accuracy. Offered in four heights for 30mm diameter tubes.Part #DescriptionA117XTRM – Ring Set – .885″ Low – 30mm – SteelA100XTRM – Ring Set – 1.0″ Medium – 30mm – SteelA104XTRM – Ring Set – 1.125″ High – 30mm – SteelA109XTRM – Ring Set – 1.375″ X-High – 30mm – Steel
