Hello guys. Looking for some help getting some history on a few bolts
1-bolt shoulder marked BF over 46, A on underside
2 -bolt shoulder marked R 4 safety marked R - assuming Remmington, but what is the 4
3 -bolt underside marked R, extractor marked cc4 -bolt underside marked R safety marked R
5 -bolt shoulder marked B&S (brown and sharp?) over 8
Thanks guys!