defective bumperboy bumpers, how common
Before you load the launcher blow into the open end of the Bumper; if pressure builds up and holds, your bumper will fire, if not the bumper is toast, mark it so you won't reload it again.
Bumper Boy had a batch of new bumpers made about three-four years ago which had internal weld problems. I bought ten and each one failed within a few firings, BB were aware of their flaw and replaced them all with new ones at no cost. However without the original sales receipt I doubt they would honour any warranty.
I found three bumperboy bumpers with the end of the tube blown out, how many other have had this happen?
i think bumperboy should replace them if they defective components due to POOR workmanship