Each ring set is CMM checked to 1.5 millionths of an inch precision and they are machined from Billet 6061 Aluminum.
They are also designed and manufactured to STANAG 4694 specs, also known as NATO spec.
The ring sets feature a stepped base-to-cap interface that allows the fasteners on one side to be tightened before making final scope alignment adjustments.
They also feature four oversized #8-32 Grade 8 fasteners used for clamping the scope.
Uses a 9/64 scope hex bit.
Ring Height: Low - 0.82in, Medium - 1in, High - 1.25in, X-High - 1.5in