I've got a good idea of what I want to do, I just need to get the exact measurements of the AT4, so I know what size to make everything. I'll have pictures of it while I'm working on it, and hopefully everything will go smooth...I should be able to squeeze that Sprinkler Valve into the back area if ...

glompos21 wrote:Can you post detail pictures of the de-milled AT-4??

I'll be able to get some, but not right now. I'm a Marine that stays on base and I have the AT4 at a buddies house, I plan on going out to his house tomorrow and when I do, I'll get some pictures.

Ok, so I read up on the Coaxial design and got a pretty good understanding on it. I believe I'm going to go with that design...as it seems like it will work fairly well with what I'm trying to do. First, I need to measure the inside diameter of the AT4 to get the exact measurement...I know it fires ...

If you can't see the picture, here is the website of article where I found the picture: http://www.arniesairsoft.co.uk/?filnavn=/projects/at4_custom/at4_custom.htm So, it is a piston design. I just want to make sure my understanding of the piston design is correct; you hook up an air source, the air...

I'm a new guy here, and luckily I found this place trying to find build plans for my AT4. I've been searching relentlessly trying to find plans/ideas to get my De-Milled AT4 into a Nerf Pocket Vortex launcher. I've seen pictures and videos of some completed builds, but no one was offering any tips/i...