I’ve fitted sling studs to a few brand new guns i.e, the ones I use for hunting because walking around all day with them without a sling is a real pain. My range plinkers are studless. If I do use my hunting rifles for plinking or zeroing at the range, I just pop the sling off and the studs don’t really get in the way.
I do understand however, that some people prefer rifles to be ‘as manufactured’ when buying secondhand and do not like studs fitted so, if your thinking of selling at some stage it’s worth bearing in mind.
HW77K .22, HW100KT .22, HW95K .22. AA TX200 MK3 .22. AA S410 MK3 .177. HW80 .25 HW30S .22. Pistols: Walther CP88 .177, Hatsan Mod25 Supercharger .22, HW45 Silver Star .177, Webley Alecto .177, SMK Victory CP2 .22