L1A1Rocker
03-25-2011, 09:18 PM
This is part 2 of this thread: http://castboolits.gunloads.com/showthread.php?p=1211911#post1211911
I had to split it up do to the 10 pic limit.
Now with all the internals complete I decided to do some sand blasting.
You'll notice that the disks and the inside of the expansion chambers are also sand blasted. I did this with the the consideration that a dirty silencer works better than a clean silencer. By sandblasting the internals I'm trying to pre-dirty the silencer.
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0434.jpg
Well, it was time to turn my attention to the gas port. I had done a lot of research on this and found that for a sub sonic gun I needed to drill this out to be the same diameter as the gas tube. A number 32 drill bit seemed the best fit here.
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0432.jpg
Please take note to the left along the barrel. Notice the grind mark? I had to do that in order to clear the gas tube coming out the endcap going into the upper receiver.
Well, back to the internals because I have not done one very important thing yet. The tube support is blocking all the volume of the tube that is over the barrel. I needed to drill some holes in it so that that space was opened up for gas expansion.
Ya know, I can remember in my high school math class saying "I'll never need to use this stuff in real life." How little did I know.
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0439.jpg
Then I just cut out my template and taped it onto the tube support to pin punch it.
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0440.jpg
And the finished product.
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0441.jpg
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0442.jpg
Ok, that's enough for now. Please stay tuned.
I had to split it up do to the 10 pic limit.
Now with all the internals complete I decided to do some sand blasting.
You'll notice that the disks and the inside of the expansion chambers are also sand blasted. I did this with the the consideration that a dirty silencer works better than a clean silencer. By sandblasting the internals I'm trying to pre-dirty the silencer.
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0434.jpg
Well, it was time to turn my attention to the gas port. I had done a lot of research on this and found that for a sub sonic gun I needed to drill this out to be the same diameter as the gas tube. A number 32 drill bit seemed the best fit here.
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0432.jpg
Please take note to the left along the barrel. Notice the grind mark? I had to do that in order to clear the gas tube coming out the endcap going into the upper receiver.
Well, back to the internals because I have not done one very important thing yet. The tube support is blocking all the volume of the tube that is over the barrel. I needed to drill some holes in it so that that space was opened up for gas expansion.
Ya know, I can remember in my high school math class saying "I'll never need to use this stuff in real life." How little did I know.
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0439.jpg
Then I just cut out my template and taped it onto the tube support to pin punch it.
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0440.jpg
And the finished product.
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0441.jpg
http://i79.photobucket.com/albums/j154/L1A1Rocker/300%20Fireball%20project/HPIM0442.jpg
Ok, that's enough for now. Please stay tuned.