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It kind of looks like the one I have. One word: Loctite. And it's not very "deluxe" but it will stick on there. Saving up for an A.R.M.S. mount myself. I got mine for 50 bucks on the forums here a couple years back.
Get the Smith Enterprise mount. The discountinued one's are back into production because there was such a demand for them (accoring to the M14Forum). They take Weaver mounts, but only cost $100 USD and the mount is well rated.
Shot 4 boxes of amo at the Range with the new mount from Marstar. Never had a single stove pipe, and is holding it's zero. Kind of a little high, but very satisfied with it. I locked tighted the front mounting screw and the back spacer. This thing is solid.