Originally Posted by ChattanoogaPhil

A chrome silicon spring quiets things down. I bought a couple from Damage Industries a couple years ago and am very satisfied. They're on sale for $6. LaRue sells the same thing for $25 in a fancy plastic tube.

Among others things.... From Despcrition -- "Significantly reduces the perceived "twang" noise which is common during firing." It does. Enhanced Spring, Recoil Buffer, Action, Carbine