The unit I bought at the time was stock . Selected it by clicking on it on site. Now its a 6 week wait they only make them 1 at a time. But its selected off drop down menu options 64 bucks each custom options cost 94 bucks . Mine fits great as good as oem . I guess if one feels funny you could get a smith to order it from Savage they still chamber 300 wsm on short actions same bolt head . I wrote this in a post couple years ago . Moderators highlighted the post. It is the solution to not file bolts down . The guy that made video to file down bolts was the guy that highlighted my post think it was Dr thunder. Check ptg website it takes two minutes to confirm this. By the way I appreciate all you do on this site you really help a lot of people my self included .