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If you have 1” or 30 mm scope tube, we recommend you buy quality extruded or machined aluminum tactical rings, and then lap the rings after mounting them. Lapping extruded rings makes them generally superior to machined rings. So why pay extra for machined rings? If you have a 34 or 35 mm scope tube, you have no choice but to buy machined rings. All machined rings should be lapped as well because the base could be bent or twisted.
We recommend aluminum rings of at least 0.62” length that use at least four screws to clamp the scope tube. The cap should have no large holes or slots to reduce weight. Instead, weight should be minimized by removing excess material in the lower half of the ring. The thicker cross sections of some tactical rings means that they will flex less when clamped around the scope tube. If the ring diameter is smaller than the scope tube diameter, the rings should be lapped even more to open them up a bit. Best results are obtained with rings that do not have excessively thick cross sections so that the ring will conform to the scope tube, and not visa versa.
Tactical rings vary in price from about $50 to $250. We feel it is unnecessary to spend more than $150 for a good pair of machined rings, and several machined tactical rings are available for around $100/pair. Select a manufacturer that supplies rings in a variety of heights.