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1-year limited warranty
List Price $54.95 Save $3.00 (5%)
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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
Things I liked: Nicely crafted product that attaches to a CZ 452 American dovetail securely.
Things I would have changed: These rings seem to be designed primarily for a bolt action rifle which is the application that I purchased it for. However in my case, mounting a Nikon 3-9 x 40 ProStaff scope, there is not quite enough clearance for the bottom of the scope's adjusting turret to clear the rail connecting the forward and aft rings. I am having to use a shim to raise the scope slightly to gain clearance. Another 0.05" clearance between the bottom of the rings and the connecting rail would have helped my installation.
What others should know: This particular Nikon scope seems to have a larger bulge at the bottom of the turret than other scopes I've seen so it shouldn't be a problem for all scopes. For airgunners I don't see the need for the cut out between the front and rear rings unless you have a bolt action, otherwise you'd probably be better off with the solid mount ( BLK#260 x 4").
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