

These are shots of the basic parts. That barrel is made of aluminum pipe, something I happen to have an abundance of in the perfect ID. It's got a cut halfway through it for about 2''. Next to it is a maglite solitaire (and a guitar effects box I'm working on).


Here we have an assortment of o-rings (you'll need to be lucky to find ones that fit just right), and a close up of the maglite, showing that when you unscrew it slightly, it can accomodate larger o-rings to create a seal.


If all of the blurriness is confusing you, this paint drawing might help. The maglite will be sliding inside of the back of the barrel, allowing a dart to fall through the opening, and then sliding back to create a seal. Lubricant and a perfect size o-ring will be needed for this to work properly. You'll also have to drill a hole down the center of the parts of your maglite, destroying it in the process, as this allows the air to flow through when the slot in the aluminum is covered. The drawing shows a cross section, one in the valve's open state, one in the closed state: the aluminum pipe is in white, the dart in grey, the maglite in hot pink (darker pink where threading is), a rod of some type in green for sliding the valve, and the o-ring in yellow. The hole through the maglite is where air will travel through when you fire a dart.
Soon I will be putting one of these in my LBB to test it out, and will post results (school's about to start though).