The large cannon we offer under the POTC mods page but you would have to ask Mike how he mounted it as it is made for POTC, the 2 mini cannons are on the pirates page as well. As to the slingshot and ball guide plastics the ones in the pic are the only ones I have made to date but can offer more. But customers would have to drill the 2 holes for mounting as I don't have the game to measure for the holes. Anyone wants anything in the picture above please feel free to contact me and I will gladly make it. Thanks and great job Mike