Cannon uses a brass "shell", also known as the 1.5 inch brass fitting I found in the home depot plumbing section, covered the bottom lip area with wax and electrical tape to keep in the pressure so the gas doesn't escape, along with heat shrink on the wires to keep it from fraying, using a spark gap for 2 points of ignition for more power, and of course, the "bolt" of it, the floating barrel just simply sitting there with Vaseline applied to keep it's movement smooth!
Planning to add a gas injection system of sorts using butane as I have that stuff all over my house, either buying a valve made for small butane cans, or repurpose a butane torch head with the igniter removed for obvious reasons, and a fan all wired up to it powered with either a 9v or 8 1.5v batteries, since I can't figure out how to step down and properly wire 2 9v's for the life of me
Also credits to this cool guy, for inspiring for me, @Auxiliary on this site, basically built a *really* shoddy version of his
don't mind my messy worktable, will eventually come around to clean it... maybe
