It sure ain't pretty, but it is practical; the trigger actually depresses the B button, just like the official Zapper. It looks like it might be a bit unruly to hold, but who are we to judge? Special props go to Mrklaw for not even trying to use consistent colors in his design, instead opting for that cacophony of bright-colored plastic that just screams "LEGO." Kudos.
[Via Nintendo Wii Fanboy]