Cossack ..... sorry but I have researched that a long time ago and unless they have revamped it totally .....................

I would not touch that for use ans I feel that they are un safe. What I have found from research and talking to others that have used them was that they were not all that sturdy when holding the string at full draw. You have anywhere from 24 - 30 plus inches being help back by a round bar with only a 2 - 3 inch anchor point on the bow. That is alot of tourque to be put onto the attachment which if it fails ........... well it is what is holding back the arrow from going ahead.

Again in my opinion ........... IT IS NOT SAFE .... just too much of a chance that something can go wrong