A bypass valve would work. Once it starts building up pressure it can not handle, the valve pops open and spews all that gases in a safe direction awayfrom the shooter. I dont think barrels expoloding is an issue anymore, RW and all the other guys trying to make other companys look bad who are not lining their pockets are bringing up old rifles that had problems and calling the entire New company bad. Believe me, if barrels were still exploding from factory defect, our anti gun news media would be all over it.