Valmet made one for their M62 & M76 series rifles. I have on on my M62S that works great. I bought some years ago but sold them out long ago. I'm surprised that someone hasn't made one as the AK type rifles ding up the brass.
The sheet metal is folded over and slips on. It's a tight fit and has never come loose in use. I did get a chance to look at an Action Arms imported .223 caliber Galil yesterday at a local shop. It doesn't appear that the Valmet buffer would clear the modified bolt handle.