I do not know that model well enough to know if there is a readily adaptable brake. Outside of laying out some cash for a brake equipped saw which would be my first choice by the way, there are some other things that will greatly reduce the chances of kickback. Anyone that is not real comfortable with saws should be running reduced kickback chains. Probably the most fool proof device is the bar tip cover as supplied with new Echo saws,. They can be installed on any saw bar. The drawbacks of such a device should be obvious but they will positively prevent tip contact and upward kick. Another effective mod is a new bar with the small radius on the end as supplied on most new homeowner saws, when combined with a low kickback chain the end of the bar will almost not cut at all and thus kickback is reduced. You should also have a pair of chaps and get some for your hubby while at the saw shop. Most of us so-called "old experts" (well I am old at least) have a scar on our legs to show how smart we are, buy some chaps and use them. A forestry helmet is not a bad idea either but I really think that their practical effect on safety is minimal.