They work well and I used one for a while, but not too long ago I got a wrench from another member of the forum that simply fits around the recoil lug. I no longer have to remove the scope mount and I no longer have to deal with trying to grip the barrel in a barrel vise or the action with a wrench. This thing works slick and I have not experienced any problem using it. The biggest thing is, no more risk of marring the finish of either the barrel or the action when dealing with a stuck factory installed nut.
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