My buddy has a really cool buffer for his AR-15. He says it's called a Normadic Buffer. It is like a cylander the same length as a normal  spring buffer. It has a PCI setting you can tweak to keep the recoil kick as high or as low as you want. He got it from a friend so he doesn't know where it came from. It goes inside the buffer tube perfectly. It is like a piston that when the gun fires it collaspes in itself when the bolt carrier is pushed back. I would really like one of these, anyone heard of this or know where they can be baught?

"Pneumatic"

www.olyarms.com

Nomatic? are those the ones that like to move around all the time