[tomjerry1]

I want to replace the sear and trigger in my PT 1911, I have found that the sear pin is of a smaller diameter than the hole in the sear? Are there sears with different diameters? if so, where can I get a sear with a smaller diameter? How hard would it be to drill the existing hole to the correct size? The hole/pin size is approximately .105", and the sear is .109.

 

[yeti]

Check it with a micrometer. Nominal size for the sear pin hole is .110 -.002

IF the frame is really off... consider having the frame reamed (#35 or check Brownells) to spec.

 

[Pedro 1]

I hope this helps;
https://redirect.viglink.com/?forma...brlcad.org/design/drafting/M1911-A1_REDUX.pdf
Page 29 Sear Pin .110 -.002
Page 53 Sear (hole) .111 +.002
Pedro.

 

[Pedro 1]

Check it with a micrometer. Nominal size for the sear pin hole is .110 -.002

IF the frame is really off... consider having the frame reamed (#35 or check Brownells) to spec.

Sorry yeti, I was typing when you posted.
I'm going back and checking myself.
Pedro.

 

[yeti]

Hi Pedro, Great reference links always welcome.

 

[tomjerry1]

Thank you for the drawings, great reference.

 

[hd073079]

When I replaced the sear in my Taurus I went with EGW, fitted without a problem.