Why do you need a safety on a Martini?

It's a single shot, it doesn't need to be carried around loaded.

I have hunted with them for over 30 years and never felt the need. Killed a good number of animals with them and never noticed any short comings.

Never seen a safety conversion on a Martini yet that was something I would trust and that goes especially for that Greener side safety. They are not reliable and they are not safe.

Of the add on the safety's I have see the best is probably the cross bolt that goes behind the trigger. But even those have to be set up perfectly with zero slack or they can fire when the cross bolt is moved.