Start out with your bolt. Basically, you need to get a piece of 1/2 inch brass centered in the barrel and the AR out. I cut the stock barrel to get out the AR and used a piece of 15/32 in the back half to help re-attach the two pieces. Originally I used putty then superglue, but this broke. You need to use something sort of flexible, I ended up just hotgluing the two broken pieces together and it's been fine.
Now, for the barrel. Take your 17/32 brass and cut it to what I think is 4 inches. Doesn't matter that much, just needs to be cut straight on the ends. To center it, take a piece of PVC and nest the barrel in it with some E-tape. Do the same with the PVC and the orange muzzle piece (I wrapped my orange muzzle piece in E-tape on the inside so it would be sturdier) Sharpie mark it where the brass stops after being put into the now modded original stock barrel, then you can superglue the brass in the PVC and faux barrel. I wrapped the faux barrel in some e-tape to help center and stabilize the barrel.
*make the PVC go all the way to the black sharpie line for max stability!*
Now all you have to do is cut the end of new barrel into a bit of a halfpipe, leaving around a quarter inch or more brass to seal the system. Do it over the sharpie line and it won't seal anymore. This makes loading A LOT easier, and you can flare the barrel out to make the breach super smooth. Finished barrel:
Breech open and closed:
Looks just like a stock hunter when finished:
With nothing else done except lube, I'm hitting around 45 feet flat or so with darts that are snug in the barrel but can easily be blown out. It is also a very accurate gun, and reloading is comparable to a speedloader'd nite finder making it a competitive blaster for pistol rounds. Comments, questions? Thanks for reading!
Edited by Blue, 01 August 2011 - 06:32 PM.