Heavy rifle-length buffer?

Anyone happen to have a link to a heavy buffer for a rifle-length stock?

I've got a Magpul M93B on my Olympic K9GL.

The factory carbine buffer is ~3oz.

I ordered a RRA 9mm carbine buffer, but I suspect even heavier would be better.

Mike

I have an AAC rate reducing buffer and it works great in my M16. They make them for both car stocks as well as full size.

Sorry no links however you can call them. The buffer is counter weights it will really slow things down.

http://www.advanced-armament.com/contact_us.asp