Stock
First, you open it up. I would recommend unscrewing the cocking handle, but keeping the back half on, the post is holding a piece together which you will need.
Some close ups on the internals
Now, you'll need to take out the barrels. Only one screw is needed to be removed for this, then they pull right out.
Now saw off the barrels, only leaving the air tanks (I THINK they are the air tanks, but it's not too clear)
Now take your desired length of PETG. I used about 4" per barrel, I would recommend longer if anything. Also, get some PVC that fits around the PETG snugly for housing it. I used this to help hold it down, and protect part of the PETG from damage.
Wrap a layer or two of electrical tape around the PETG, then hot glue it in the PVC.
Next, you hot glue the barrels to the air tanks. I followed this up with epoxy, which I suggest doing.
Now, you'll need to make room for your new barrels. So cut out the plastic supporter in the shell. Remember to do this to both sides. The screw hole also has to come out.
Insert the new barrels in the shell, put the one screw in to hold it all down.
Put the shell back on, and you're done!
Ranges-
44'
49'
53'
55'
55'
I liked this modification, and would recommend it to anyone's Blast Fire. It's not the most powerful, but you can shotgun fire, or semi auto 5 rounds, which is cool and very useful in my opinion.
Questions or comments?
Edited by Coop, 21 September 2008 - 11:18 AM.