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 Colt 1911A1 70 vs 80 Help!
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my-handyman
Junior Member

USA
375 Posts

Posted - 11/22/2017 :  7:54:02 PM  Show Profile  Reply with Quote
Can someone please tell me what is the main differences between the Colt Series 70 and the Series 80? I have tried to find this info, but have had no luck. 
Thanks for your time and info!

"Ask not what your country can do for you" JFK
"The only thing necessary for evil to triumph is for a good men to do nothing." Edmund Burke
Examine the gun Very closely ("buy the gun not the story").
"What we’ve got here is … failure to communicate. Some men you just can’t reach. So you get what we had here last week, which is the way he wanted it" Strother Douglas

Edited by - my-handyman on 11/23/2017 01:19:58 AM

fordsix
Advanced Member

8019 Posts

Posted - 11/22/2017 :  8:32:55 PM  Show Profile  Reply with Quote
little dodad that blocks fireing pin till trigger pulled ..70 could go bang if dropped
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Hawk Carse
Advanced Member

4105 Posts

Posted - 11/22/2017 :  10:13:43 PM  Show Profile  Reply with Quote
In the 21st century, everybody, even Colt employees, think "Series 70" means "lacking firing pin block" But in 1970, it meant "having the Accurizor bushing." (Collet type.)

"Series 80" means "having firing pin block."
But even that is confusing because the firing pin block was not introduced until 1983. I guess the same advertising agency that has redefined Series 70 thought that "80" was sexier than "83."

There was some overlap into the 1980s, guns with both Series 70 bushing and Series 80 firing pin obstruction. But misfit and mistreated collets can occasionally shed a finger and jam up the gun, so the device was discontinued.

Now you can buy a "Series 70" Colt with neither collet bushing nor firing pin block.
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perry shooter
Advanced Member

17252 Posts

Posted - 11/22/2017 :  10:29:13 PM  Show Profile  Reply with Quote
before WW II a man working for Colt came up with a new safety and called it a SWARTZ safety device it was at that time advertised under " a safe gun made safer. and colt made it available on their 1911 type pistols both 45acp and 38 super when WWII started the military did not want to have this option and all military pistols had this safety removed but colt had payed a royalty to swartz for each gun with one jump forward 40 years or so and colt thought the design again had some merit but did not want to pay the heirs of swartz the royalty so they made a slight remake and called it a series 80 the big difference is swartz did not ruin the trigger pull like the current series 80 does
series 70 it was a part of how the the grip safety worked editthere were even some foreign sales from colt with SWARTZ safety I have a pre WW11 by serial number but shipped to Argentina in 1942 I got it from Locust Fork hear on GB with c in serial number as well as a National Match pre war I love the Swartz hate the series 80

Edited by - perry shooter on 11/23/2017 11:39:26 AM
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charliemeyer007
Advanced Member

USA
5352 Posts

Posted - 11/22/2017 :  11:16:36 PM  Show Profile  Reply with Quote
I like the pistol exactly how John designed it.
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forgemonkey
Advanced Member

USA
18399 Posts

Posted - 11/23/2017 :  07:55:50 AM  Show Profile  Reply with Quote

Here's the illustration of the firing pin block,,,,,,




Six dollar conversion 'shim' to do away with the firing pin block components,,,,,,,,,,,,

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nmyers
Advanced Member

15370 Posts

Posted - 11/23/2017 :  08:56:09 AM  Show Profile  Reply with Quote
It will be easier to research if you use the correct nomenclature. The model gun in question is "Government Model".

Neal

Edited by - nmyers on 11/23/2017 08:56:54 AM
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forgemonkey
Advanced Member

USA
18399 Posts

Posted - 11/24/2017 :  1:41:12 PM  Show Profile  Reply with Quote
Here is the 'shim' in place that replaces the Series 80 firing pin block lifting arms,,,,,,





Shim as shipped,,,,,


Edited by - forgemonkey on 11/24/2017 2:36:59 PM
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cowboy77845
Junior Member

USA
292 Posts

Posted - 11/24/2017 :  8:12:26 PM  Show Profile  Reply with Quote
I put one of those shims in my 38 Super and the trigger pull was reduced by 1/4 pound.
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dfletcher
Advanced Member

USA
7515 Posts

Posted - 11/28/2017 :  7:05:13 PM  Show Profile  Reply with Quote
Piggybacking the OP, I don't like having the hole in the slide and leave the plunger in place without the spring. I use a Series 70 only FP and the plunger simply rides on it.

I know some will say the Series 80 trigger can be tuned just as well as the Series 70. Perhaps that's true, but I'm more comfortable cleaning up the 70. And whether it's real or imagined, I think I can feel the dogleg "whip" just a bit on the 80 version.

dsf
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my-handyman
Junior Member

USA
375 Posts

Posted - 11/30/2017 :  7:19:32 PM  Show Profile  Reply with Quote
Gentalmen: Thanks for the info and photos! This helps very much!

"Ask not what your country can do for you" JFK
"The only thing necessary for evil to triumph is for a good men to do nothing." Edmund Burke
Examine the gun Very closely ("buy the gun not the story").
"What we’ve got here is … failure to communicate. Some men you just can’t reach. So you get what we had here last week, which is the way he wanted it" Strother Douglas
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