Colt Mustang trigger work, try it myself?

[Cuda]

I just got a nice Colt Mustang but the trigger has a 12.5lb. pull determined by hanging milk jugs of water from a string wrapped over the trigger and then weighing them on a digital bathroom scale, it took almost 1 1/2 jugs of water to trip the hammer. I'd like to get it down to 5 or 6lb. I know a lot of people have screwed up there guns by attempting to do there own work, I have zero gunsmith experience but I have been a machinist for over 20 years and pretty much know my way around metal. I think I could do it if I could find some instructions somewhere but have not found any online, anyone know of any online instructions or can give me any in person? Does a trigger job just consist of polishing the sear and hammer or is metal actually removed? If I just highly polished them would that improve the trigger? Or should I just look for a local smith and take it to him? Thanks

http://www.pbase.com/davedent/image/54796127/medium.jpg

[NucSub]

I would suggest that you read up on action jobs for the 1911 as the Mustang is basically a miniature Commander.
As with machining, please read several differing sources for general information to confirm be before attempting.
You shouldn't have to remove metal, just polish the action.
I have a .380Govt that I've never worked but is plenty smooth due to age and use.
After you work with it a bit, you will really like it.
Be sure and read thru the manual for field stripping as the extractor on these can mess with your mind.
Enjoy.

[1911nut]

You might could polish the hammer hooks if you use a new (sharp 90 degree edges with no nicks) very hard Arkansas stone or a ceramic stone - Brownells has a nice selection but they're almost $30. Polishing the sear nose without the proper jig would likely ruin the sear or at best give a mushy trigger and maybe an unsafe trigger. The angles and contact of the sear/hammer engagement surfaces are important.
Sear jigs run from $37 (Ed Brown) to $150.

Finding a pistolsmith that has a reputation for good trigger jobs on 1911's should be considered.

Skilled machinists make good gunsmiths - but the specialized tools for gunsmithing can be costly.

The trigger should smooth up after 500 rounds but 12 lbs is a lot to smooth up. Maybe check the sear spring - slight bending of the leg that contacts the sear (the left leg) could reduce the weight - it just takes a very small about of bend - go slow.
Larry's guns www.larrysguns.com sells a moly slide grease for hammers and sears that I found noticeably smoothed and lightened the trigger pull on several handguns.