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SA USGI bolt question

This is a discussion on SA USGI bolt question within the The M14 forums, part of the M14 M1A Forum category; Im working on a 1962 SA clone,what would be the right bolt for that era the 85 or 86 series bolt And on the op ...


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Old April 20th, 2017, 07:11 AM   #1
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SA USGI bolt question

Im working on a 1962 SA clone,what would be the right bolt for that era the 85 or 86 series bolt
And on the op rods when did the revision come into play with the drain bole on the end of tbe tube


Last edited by forceman; April 20th, 2017 at 07:46 AM.
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Old April 20th, 2017, 07:35 AM   #2
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Terry I really can't give a definitive answer but being that it's 1962, both 85 or 86 series bolts would be fine. I believe that the drain hole was just being implemented so it too could go either way.

I think 62 was a transition year. I'll go do a little reading and see what I can find.

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Old April 20th, 2017, 03:51 PM   #3
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I've got a NOS SA bolt that came straight out of a sealed can of 5 dated 1962. It's a 86 series. I think I posted pictures here if I find the thread I'll bring it back to the top for you.

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Old April 20th, 2017, 04:06 PM   #4
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When did they use the 85 series bolts then,ive read the 85 series bolts were the early ones and the 86 series followed

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Old April 20th, 2017, 11:34 PM   #5
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Terry that is correct the 85 series bolts were the early version supplied without the bolt roller, later bolts were required to have the bolt roller already installed.

I think it is safe to say that either 85 or 86 series could be found on a 1962, but more likely 86 series would have been used.

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Old April 21st, 2017, 04:27 AM   #6
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sa bolt recall 85 series
Bolt Recall now with Pics
http://forums.thecmp.org/showthread....d.php?t=142592

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Old April 21st, 2017, 04:52 AM   #7
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So what did they do for the 59 60 61 Sa rifles,when you say the 85 series bolts were supplied with no rollers are you saying that SA didn't make there own bolts? What do you exactly mean there were not supplied with rollers? What im saying is if SA made there own bolts what is the difference of the bolt roller,someone had to of installed the roller,and if the bolts were made at SA factory then someone at SAwere putting on the rollers,when did the drawing number change to 86 series

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Old April 21st, 2017, 05:25 AM   #8
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Quote:
Originally Posted by forceman View Post
So what did they do for the 59 60 61 Sa rifles,when you say the 85 series bolts were supplied with no rollers are you saying that SA didn't make there own bolts? What do you exactly mean there were not supplied with rollers? What im saying is if SA made there own bolts what is the difference of the bolt roller,someone had to of installed the roller,and if the bolts were made at SA factory then someone at SAwere putting on the rollers,when did the drawing number change to 86 series
The drawing number changed when they packaged the bolt with roller already installed.

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Old April 21st, 2017, 05:50 AM   #9
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So when did the 86 drawing number come about,what time frame,

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Old April 21st, 2017, 06:02 AM   #10
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I believe both the bolt roller and drain hole revisions were in 1961. A 1962 factory rifle should have both revisions in place, but there is no guarantee that earlier parts weren't still in the bins and were used until exhausted.

I'm pretty sure the roller change was simply to speed things up on the assembly line and to make things easier to supply unit armorers.

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