The one donut

I am currently working on an underslung shotgun, and am having some concerns about using a ball valve for air release. I understand it may not be ideal to use, but will it at least suffice? Here is a link that *hopefully* works to attach the photo of my progress. http://pbckt.com/pH.UNZJOi

Thanks!

So I got my BBB today. Now that i'm done playing with the terribad stock form, I want to single it. Obviously.

I was wondering if breech would be inefficeint and what the best kind of breech would be. I bought some foam for the type of breech in the "homemade" guides. I would prefer it if the breech were easier to use/make, also.

Your thoughts?

Edit: Really, I want to know if that breech is any good. (the one in the homemades section).

I plan on singling a BBBB, when target decides to restock.

I accedentally bought the wrong size of FBR, I think it was an inch. Bottom line is its too big. Recently, I discovered some PVC in the back of my garage. They were a perfect fit! So now that I had a use for all that FBR and PVC, thats what I plan to use.

To test my stepans and PVC out, I unscrewed the rocket attachment and put on the PVC. Because it was in no way permanent, I used duct tape. After pumping it up, obviously, I shot it. I was dissapointed with the rage. Not even 60 feet!

What might have gone wrong:

Bad seal with the duct tape

PVC not long enough (I used a scrap about 8 in. long)

The sizes of the barrel and stapan wasn't right

My stapans are no good

If someone could help, that would be great. I'm a noob.