It creates a good seal by having this brass piece in the back. It's made out of 1/2" brass with e-tape around it to make a nice secure seal when the barrel in moved over it.
The barrel is completely removable at the moment, but can easily be secured inside the breech by glueing a piece onto the very end of the barrel (the part that is in the dart slot, so when you pull it out it stops at when the PVC begins).
I'll make a write-up eventually (my first one in a LONG time), once I perfect everything. It is pretty obvious though, let me know if you guys don't think you need one.
These are alot easier to make and alot cheaper than my brass breech's, so eventually I should be able to make alot more alot quicker for people to buy.
Edited by OfAllTheNerf, 06 September 2008 - 05:55 PM.