they can actually cause more stress since the recoil spring dynamics change when one is installed. not to mention the little bits of the buffer getting wedged everywhere if it decides to come apart.
a properly functioning 1911 does not need this gimmick.
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." L. Neil Smith
The problem with being stupid is you cannot simply decide to stop doing dumb things...
"I crapped my pants to avoid the draft!!" -Ted Nugent
If you run 10K a year through your gun and are willing to change them out every 500 rounds (they do breakup and cause jams) then it might be worth it for you. Never would I use them on a carry gun though.