thats because outer thickness are not regulated by any standard only surfaces that are in contact. so if you have multiple dealers around you can see if they carry a different brand and it might work.

Used a disposable camera's flash for the sparker in spudzooka design. Took it all apart and when I went to attach it to the cannon the guys pranked me and charged it and needless to say when the screwdriver hit the contact it went flying out of my hand and lodged its self into the wall.

@psycix-
Well if its just regular open air combustion, if its pressurized combustion thats a different story

male threaded fitting

Its because some blowguns dont seal if you pressurize opposite the traditional flow. From what I understand and have seen, output pressure can cause the internal pin to unseat therefore leak, and inturn accidentally firing your spud gun. Not all blowguns do this and if you find one that works ...

I am just about done with my first gun and before I head off to Home Depot, I wanted to get some ideas about the Lawn Genie 54004. From what I read it can be modded and evidentally has an rod in it. The question I want to ask is can I offset the hole in the top and not mess with the rod? Or do I ...