Is breaking in hop-up buckings a myth or a necessary thing to do? Rummbolt talks about this in this video... "Many Airsofters talk about it, but is it really true? Do freshly installed Hopup buckings, and therefore also new airsoft replicas, need to go through a break-in period before performing at their maximum potential? And how many BBs are needed in this case?

This is what I would like to discuss and test in this video on five different buckings of different Shore- / Hardness Ratings."