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Unknown's Basic Breech

Unknown Breech

This simple breech, based off of the design of Unknown's, is incredibly simple, and incredibly effective, provided you don't mind pulling the barrel out, rather than move some kind of breech handle, or using some kind of pump actuation. It's really just a modification of the removable barrel.

Breech parts, exploded

Essentially, all you need is:

  • 1/2" PVC
  • 1" PVC
  • Foam Sheet (2mm)
  • Hacksaw
  • Hot glue
  • Hot glue gun
  • 1/2" PVC Coupler [or gun modified for removable PVC barrels]

Simply cut a piece of 1" PVC, about 5" or so long. About 1" from the back, cut a rectangular hole about 0.5cm larger in width and height than the darts you plan on using, using either a dremel, or some creative hacksawing. Now, just cut a rectangle of Foam Sheet the length of the 1" PVC, and the width of however long you need to line the inside of the 1" PVC. You can test this, of course, by cutting more than you think you need, and trimming as neccessary. Either way, by the end, you should be able to line the entire inside of the 1" PVC piping with the foam sheet, applying some hotglue to the 1" PVC, and inserting an over-rolled piece of that foam sheet into the breech, then letting it unroll to cover and bond. Push a piece of 1/2" PVC into the breech as it dries, to make sure it gets a good shape.

Open Breech

So now, you just have to get a knife of some sort, like an Exacto knife, and cut out the breech hole from the Foam Sheet lining. After that, you need only to attach your 1" PVC breech to a 1/2" PVC coupler, by hotglue, connectors and reducers, creative sanding, or whatever else you want to use to get it firmly attached to the breech. Seal matters little. When the 1/2" PVC barrel is placed in the breech, it should eventually hit the coupler, and seal with it. Push the barrel forward, and you open the breech.

So truly, what you have now is a dignified removable barrel. Even so, this dignification allows for faster reload of a tight barrel than any basic barrel removal, or ramrodding. Given, some barrels allow you to just drop a dart in, but this is a solution centrally for combinations like Micro darts and 1/2" PVC.

All images, content, and karp © Zero Talent 1999, 2002