@Appalachian American built this thing for me. The video is from shop 2.0 but we still use it for anything, anytime we need to test. He told me it was a pistol trap....Yeah... I've dumped full auto AKs and M16s in it at least a dozen times. Not to even mention the 1000s of rounds of everything else I've poured in it. It even has a suction tube for ventilation set up on top of the trap.