Another 1911 Thread (Groan)

So although a lot of people gripe about it, a Series 80 trigger group doesn't really have any practical negative effect?
 
it adds slightly to the weight of the trigger pull, and the "feel" of the trigger pull... the Series 80 trigger group has an additional two small levers that depress the spring loaded plunger (in the slide) that blocks the firing pin...... you can get a sub 4 pound trigger pull with the Series 80 parts installed that is still pretty crisp.....
 
Wound up getting a used (as in sold, then maybe fired once, then sold back after sitting for a bunch of years) Colt Mk IV Series 80 Gold Cup National Match. Great price, perfect condition. The one bad thing is that I read that it may have a target recoil spring installed for light loads (and possibly a lighter trigger spring?). That's annoying. Ridiculously crisp trigger.
 
an old trick to check for proper recoil spring (most of the younger guys shooting .40SW in a single stack shoot very light springs<10#)... load one round in magazine, shoot weak hand.... limp wrist, ejected brass should clear port about 6inches...and slide should lock back (if you want it to)...change spring rates up or down to accomplish this (remember that cocking the hammer (main spring) affects recoil rate.... I ran extremely high spring rates in a .45.... 22-24# ISMI springs that take a set to a couple pounds less....never had a problem chambering a .45 with high rates.... if you ever decide to pull it apart, check a parts diagram, there is a small spring and lever gizmo on the sear that is not found in other 1911s... if you plan to shoot in competition, measure the height of the rear sight, and put a little room temperature vulcanizing silicon sealant under the rear sight, let harden a couple of thousandths high, tighten it down to measured height... make sure none got into the firing pin tunnel if you removed the sight adjustment screw ... this will help keep the sight pivot pin from shearing...
 
Thanks for all the useful information Les. It inspired me to read up on that sear depressor - sounds like it'll make it a bit of a bear to strip and put back together.
 
wintermute...it's just a surprise when you pull one apart and parts fly... make a slave pin to re assemble...the Gold Cups have the wider and heavier trigger, and it cuts down on trigger bounce tripping the sear
 
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