Colt National Match Depressor and spring

I recently acquired a circa 1974 Colt 1911 45 ACP Gold Cup National Match Series 70.
 It had been accurized for bullseye shooting.
 I determined this by the presence of a Kart barrel and bushing, a Clark rib mount, tight lock up , tight bushing and already installed Ultra dot sight .

I did a quick field strip and cleaned and lubricated the top end before testing it with my reloads 200 SWC over 3.8 Clays . It was flawless for the 100 rounds I put thru it and was entirely in the black after some minor elevation adjustments.

Upon a complete disassembly I discovered that the sear has a hole where there would have been a depressor spring and there was no depressor installed.

Now to my questions.

Would these parts have been eliminated as part of a trigger job?

Is it ok to NOT have these parts installed because the gun seems to function perfectly?

The channel where the ejector presides is cutaway, is this also stock from Colt?


Thanks in advance for your answers.

The depressor was very likely removed when the Kart barrel was installed during the accurizing process.  If the gun has a 3.5 trigger pull and functions normally it is ok for that part to be absent.  The Colt Goldcup slides have been lightened.

You might to reinstall the depressor parts. My Series 70 had them removed and it had nasty habit of doubling. Had the parts put back in and no problems.

Wasn't the depressor and spring installed to offset the weight of the G/C N/M steel trigger? If a similar, light weight trigger is used can it be eliminated?
 
Smiles.

I would not use a Gold Cup sear without the depressor and spring. The sear has been thinned to compensate for the depressor; when assembled it gives correct sear thickness. 
So basically you have from front to back the rear of the trigger, the disconnector, sear depressor, sear and sear spring. Added up in their correct positions in the receiver provide a consistent geometry relationship that can affect the thumb safety, and disconnector function; also how the disconnector tip functions inside the disconnector groove in the slide. This geometry affects safe function of the pistol. Without depressor the trigger will have more pre-travel, and potentially less contact with the disconnector. 
Most of the pistols I’ve seen missing the depressor had horrible feeling triggers and some had sporadic other trigger pull/firing related issues.
I recommend replacing the sear depressor and spring or getting a new standard sear for safety’s sake. It’s not fun shooting full auto 45’s, I’ve done it.
Jon

What's a depressor?

I do not recall any extra deal in my 1963 GC.

thank you for all the responses. I will be ordering the parts this week.

Jack H wrote:What's a depressor?
I do not recall any extra deal in my 1963 GC.

Only found in Series 70 Gold Cups. A small spring and device used to set constant pressure on the sear.
https://www.gunpartscorp.com/products/205840

The depressors are getting hard to find, but I see one on GB right now.

Have a gold cup sear, think the advantage is the hammer strut hole is repositioned to allow the hammer to almost over center at full cock, the pressure between the hammer and sear is definitely less than a standard hammer. Makes the trigger pull a little lighter, mine doesn't have the spring, haven't had any problems.