trigger job with stock parts....

[SSN Vet]

I"m an aspiring basement gunsmith and have a hankerin' to work the trigger on my stainless Commander. I've done a fair bit of research and have aquired most of the tools needed, with the rest on my Brownells wish list.

The trigger currently breaks crisply at 5# as measured on an old RCBS "fish scale" style gage. I'd like to take it down to 3.5#, as this pistol is not intended for carry.

I do not want to drop money into an after market trigger group at this time.

The hammer is machined stainless, but I believe the sear and disconnector are MIM (haven't inspected it closely yet)

Q1: Since the trigger breaks crisply now, should I consider leaving it as is and simply putting a 19# main spring in.

Q2: Could I get good results by simply leaving the sear and disconnector as is (or very lightly stone the existing angles) and then squaring the hammer hooks and filing/stoning them to .020"?

Q3: Can I stone the MIM sear on a Wilson style jig without removing the temper? or will it remove to much material? I have fine India and hard Arkansas stones.

Thanks in advance for any and all help.

 

[Magnumite]

Q1: You may just want to adjust the tension on the sear and disconnector leaves of the sear spring to get your pull weight down. You may get hammer follow when dropping the slide with a steel trigger.

Q2: If you aren't familiar with stoning the hammer hooks, I'd stick with the sear and disconnector. You may need a slight backcut on the sear to help prevent rough initial movement of the sear. Smooth the flats of the disconnector where it bears against the trigger bow and the middle leaf of the sear spring bares against it. Then smooth the part of the trigger bow what bears against the disconnector.

Q3: Colt uses a good sear. You may stone it without any concern.

 

[SSN Vet]

Would a 19# mainspring help??

 

[rcmodel]

A lighter mainspring will lighten the trigger just a tad.

But it also slows lock time a tad too.
It also has some bearing on the timing of the slide / barrel unlocking.

IMO: Slower lock-time is worse then an extra 1/2 pound trigger pull. ANd you for sure don't want it unlocking too soon.

Polish all the contact surfaces, and see what you got.
You can adjust sear spring & trigger bow tension by bending the arms on the flat spring. But as Magnumite said, you may get hammer follow which is not good either.

rc