For the year or so I've been trying to put this together I've only come across the Poseidon set with the box once (I let it go since the price seemed expensive, wish I woulda snatched it up), I finally managed to get a Hudson Jericho 941 that had been modded with the poseidon kit a few days ago. Definitely feel for anyone else on the lookout for either the gun or kit, they're near impossible to find. I ended up with 2 Hudson Jericho's though, one unmodded, the other modded, hopefully I can find a kit by itself or if someone makes a cast of it, I dunno much about molding or I'd try it myself.