Barrel Donuts?

Discussion in 'Firearm Accessories & Gear' started by Drefizzle, Nov 11, 2008.

  1. Drefizzle

    Drefizzle New Member

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    I just heard about something called a barrel donut, I guess they are for vibration and recoil damping?
    All I could find on google was patent info.
    Are these thing real?
    Do they work?