I have a mixed bag of some with a sling stud mounted as jhalcott, and some with a sling stud that replaces one of the forearm mounting screws. Both ways seem to shoot the same (just fine thank you), but the regular stud is a little easier because you just have to remove and remount the forearm as normal. The other way takes a little extra care to get the stud lined up correctly. Not a big deal for sure.