If you ever ran into a situation were your shirt or jacket flips off the thumb safety on your 1911, here is a easy fix.
Replace the Plunger spring with a Wolff.
Wilson Combat is also making a complete Assembly with spring and pins in their Bulletproof line.
Pachmayer makes a plastic tool called a 'Widget", that makes the whole job painless and about 5 mins.
Factory springs can be a bit on the poor quality side.
I don't put a kink in the spring, just swap the pins. put a smear of oil on it and reinstall.

Midway or Brownells has everything you need.


https://www.midwayusa.com/product/155597/wolff-plunger-spring-1911

https://www.midwayusa.com/product/581547/pachmayr-widget-assembly-tool-1911-polymer-blue

http://shopwilsoncombat.com/Plunger-Tube-Assembly-Bullet-Proof-Blue/productinfo/821B/

http://shopwilsoncombat.com/Plunger-Tube-Assembly-Bullet-Proof-Stainless/productinfo/821S/

Never had that problem although I do not CC my 1911. Also all four of your links do not work.

Links fixed.