It's good to some efforts in airsoft practical shooting in the US with Intrigue Airsoft having their own Hammer/Cups IPSC Airsoft Open Weapon Class they held last 13 February... "Hammer/Cups was created during downtime while the Intrigue Airsoft Factory was being built. The rules are similar to real steal IPSC. We had so many hammers left by all that came to help with construction that we used them as stations to shoot from at the solo cup targets.

Hammer/Cups rules are as follows- You must touch each station/hammer with a foot and hit a minimum of one target/cup from each station/hammer. The shooter with the best time wins."