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Things I liked: Great product for my CZ455 Evolution in .22LR application.
Things I would have changed: I would prefer to see Torx screw instead of Allen keys....I don't even have allen key bits for my torque wrench....providing torque specs would be nice...
What others should know: Pyramid's service was excellent,. shipping was prompt, price was right. Thank you.
Things I liked: Machine work and finishing detail are excellent.
Things I would have changed: Dimensionally these rings fit the receiver dovetail very well, but the ring portion is not circular, it is football shaped. This causes contact at only the top an bottom of the scope tube which deforms the scope tube as the rings are tightened. They are made this way on purpose according to FAQ #15 on the BKL website, but their theory on how the football shaped rings will "become a circle around the scope tube" as you tighten them is highly flawed. The tube wall on even the best scope will distort before the out-of-round ring "becomes a circle". I tried two different Leupold scopes and both were tightened with a #-in. torque screwdriver incrementally and the rings deformed both scopes. BKL needs to get a new engineer. Don't buy these rings.
What others should know: If you already have these rings installed on rifle, use a set of calipers or a micrometer to measure your scope tube right next to a ring, you will likely find it is crushed and out-of-round by at least .005"
Things I liked: easy to install, very tight grip onto the mount and scope.
Things I would have changed: nothing, its perfect for my cz452
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