View Full Version : mark 3 safety spring

March 11, 2009, 08:36 PM
looking for the spring that fits into the thumb latch on the safety for a ruger mark 3. I have the round head pin but I lost the spring. Will a mark 2 spring fit?

March 11, 2009, 09:16 PM

I found the parts books for the Mk III (http://http://www.ruger-firearms.com/Firearms/PDF/PartsBooklets/C13.pdf) and Mk II (http://http://www.ruger-firearms.com/Firearms/PDF/PartsBooklets/C2.pdf) at the Ruger website.

I think you are speaking of the safety detent spring. If so, they list the safety detent spring as part #A20200 for the Mk II; however, the safety assembly for the Mk II is sold as a complete unit according to the parts booklet.


Citizen Carrier
March 11, 2009, 09:32 PM
There is no difference between the Mk II and III detent springs.

Sounds like somebody was trying to install an aftermarket sear.

Same thing happened to me the first time.