Help with Steampunk Nerf Gun
So I have a Nerf Strongarm and for a Halloween Costume and I want to do something like this to it: https://www.pinterest.com/pin/155655730846495601/ but I like the idea of the fluid power source type part that this gun has: http://crimson-shirou.deviantart.com/art/Steampunk-Firestrike-NERF-Pistol-379533844. But I'm not sure how to go about attaching the test tube to the gun, ideally I'd like to be able to attach it in a way that I could take it off and put it back again, so maybe like a sort of holder for it or something? If anyone can give me tips or advice or anything I'd be grateful for it.
So I have a Nerf Strongarm and for a Halloween Costume and I want to do something like this to it: https://www.pinterest.com/pin/155655730846495601/ but I like the idea of the fluid power source type part that this gun has: http://crimson-shirou.deviantart.com/art/Steampunk-Firestrike-NERF-Pistol-379533844. But I'm not sure how to go about attaching the test tube to the gun, ideally I'd like to be able to attach it in a way that I could take it off and put it back again, so maybe like a sort of holder for it or something? If anyone can give me tips or advice or anything I'd be grateful for it.