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That depends purely on the way u decide to mount the rail, and the type of rail. Mines held in place with 2, 1/4" bolts threaded into another 1/4" of high hardness steel. Unless the bolts work loose, the rail ain't going no where ! lol
I ordered the MagWedge SKS KwikRail Scope Rail (Gen 3) and Ill let you's know how it works. Unfortunately I haven't heard back from true north arms on where it is ???