Mine stays in just fine, I put the bends in it like the CSS video shows. But when i was instaling after my conversion I actually put pin through the loop the spring made. This made it completely secure, it might be worth a try if you want to keep the bolt hold on.
As to the actual question if the russians use the bho, I am not sure, but would be interested in knowing. I would imagine that they do not. I think it was put on as an import requirement to make it a sporting weapon