Yes, I've been using them for a long time, no issues, Napoleon Bar End mirrors, you can get them from dealers or find them on Amazon, black or chrome. Big image, but beware of imitations which give a fun-house image. Be sure to tighten them now and then. I lost one on the highway a couple of years ago, so now I check them before I go out.
On the BSA, I use the cheap CRG knock-offs, seem to work all right, e-bay and Amazon have them. The glass is kind of small, buy I got used to it, you just have to know where to look. This kind can clamp around the end of the bar rather than use internal expanders for mounting.
Beats craning to see around your elbow :bigt