I've got a couple of these lugs, I think they are nice, my picky picky gunsmith hates'em, mostly because He can't make one for me when I've already got one. I like the thickness and the side taper, if you can get your smith to install the pin you will be ahead in the future. If you are doin ght stock work yourself, you will most likely be bedding the action area so openning up the recoil lug area will be no big deal. Be aware that the top of the lug or the portion that the barrel goes through is wider and just plain bigger that the stock unit. You'll need to open up the area just ahead of the action as well. This is no big deal rally.