Savage Hog Hunter metal trigger guard.

[Buster95]

This trigger guard will fit on a .223 Hog Hunter?

[dfrosch]

If it's not a bottom bolt release, maybe.

Savage changed their trigger guards a few years ago. There's a pic in the link that shows the difference.
http://www.stockadegunstocks.com/3.html

I have used a few washers to make up for that boss not being there.