M1A SPRINGFIELD NM, problems (full auto) - M14 Forum

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M1A SPRINGFIELD NM, problems (full auto)

This is a discussion on M1A SPRINGFIELD NM, problems (full auto) within the Devine M1A forums, part of the M14 M1A Forum category; When I shoot with my national match, some cartridges are in full auto, I do not know what happens, has anyone ever had this problem? ...


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Old March 22nd, 2017, 01:11 PM   #1
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M1A SPRINGFIELD NM, problems (full auto)

When I shoot with my national match, some cartridges are in full auto, I do not know what happens, has anyone ever had this problem?
I disassembled everything but I did not see anything abnormal
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Old March 22nd, 2017, 01:23 PM   #2
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How many in a row? Are you milking the trigger?

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Old March 22nd, 2017, 01:29 PM   #3
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2 in a row on 5 and several times. The other shooters looked at me with a dirty look...

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Old March 22nd, 2017, 01:29 PM   #4
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If you mean that two or three go off in a row, then you need to hold the rifle tighter in your shoulder when shooting off a bench. Try shooting from standing and it probably won't happen.

Tony.

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Old March 22nd, 2017, 01:33 PM   #5
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check and make sure hammer not broken

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Old March 22nd, 2017, 01:37 PM   #6
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Quote:
Originally Posted by tonyben View Post
If you mean that two or three go off in a row, then you need to hold the rifle tighter in your shoulder when shooting off a bench. Try shooting from standing and it probably won't happen.

Tony.
Thank you, but until now, it did not and I often sat or slept and no problem until today

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Old March 22nd, 2017, 01:43 PM   #7
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we had an earlier thread where one of the hooks on the hammer broke,causing same problem.might check that.
USGI trigger group hammer broke.
check trigger pins also


http://shop.shootingsight.com/M1-M14_c2.htm?page=all

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Old March 22nd, 2017, 01:50 PM   #8
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Quote:
Originally Posted by POLACK View Post
we had an earlier thread where one of the hooks on the hammer broke,causing same problem.might check that.
USGI trigger group hammer broke.
check trigger pins also


http://shop.shootingsight.com/M1-M14_c2.htm?page=all
Thank you, I checked my hammer and everything is in good condition. I checked my cartridges, nothing abnormal either ...

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Old March 22nd, 2017, 04:49 PM   #9
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While holding the rifle firmly against your shoulder, HOLD the trigger fully rearward until recoil has stopped,
Then FULLY release the trigger before applying any pressure for the next shot.
Do NOT use 'delicate trigger pressure' - pull the trigger and hold it.

If the problems remains when you do it that way, then check these items -

1) Has the pressure needed to close and lock the trigger guard changed
recently? Increased pressure can cause some distortion of the trigger group geometry, and that 'might' cause the problem.

2) Has the 2nd stage pressure changed, or does it vary from shot to shot?
It should be the same for every shot.

3) Very carefully dryfire with your full concentration on feeling if there is any 2nd stage trigger creep before the hammer is released. My 'belief' is that there should be a tiny amount of creep to ensure there is adequate 2nd stage sear engagement.

4) Examine the rear of the firing pin to verify that the 'safety tab' is intact.

Jay Kosta
Endwell NY USA

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Old March 22nd, 2017, 05:33 PM   #10
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Pull the trigger and hold it to the rear.

Work the operating rod with your other hand, to recock the hammer.

Let go of the trigger. See if the hammer falls or stays cocked.

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Old March 22nd, 2017, 05:57 PM   #11
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I went through this drill with my M21. I checked everything and was still doubling at times. After I got my SOCOM 16 and did not have any issues I decided it was time to contact Springfield. Around that time my M21 actually tripled once and that was it. Springfield had me send my trigger group back to them. Since returning home it has not doubled, ever. If I remember right they replaced a few trigger parts.

Sorry folks, sometimes it just needs "fixin".

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Old March 23rd, 2017, 03:59 PM   #12
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This was not an unheard of problem when people were shooting M1-As and M14 across-the-course. The fix is easy with a strip of 800 grit wet-or-dry sand paper. Find an old highpower shooter or armorer in your area to show you.

Good luck

Jerry

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Old March 29th, 2017, 02:54 PM   #13
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Quote:
Originally Posted by Jerry M View Post
This was not an unheard of problem when people were shooting M1-As and M14 across-the-course. The fix is easy with a strip of 800 grit wet-or-dry sand paper. Find an old highpower shooter or armorer in your area to show you.

Good luck

Jerry
Jerry, good luck did you see where the OP is from? I bet that there isn't one NM trained Armorer in the whole country. Being "There" on vacation with the wife, doesn't count...

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Old March 29th, 2017, 03:12 PM   #14
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I had possibly the same, or a similar, problem with my own new National Match. I own a Scout and a Socom, no problems with either regarding the trigger or hammer, and firing off any "accidental doubles."

My NM was fine for the first 200 rounds or so, and then suddenly it began to double, badly. No matter how I held it, or manipulated the trigger, it would double. Eventually it was almost every time, and I had to single load my mags on the last trip to the range.

I replaced the trigger/sear, hammer, hammer plunger, pins, etc, with NOS GI parts, and the hammer spring with a Tubbs spring. This immediately solved the issue. No more doubles.

If you believe you are not bouncing the gun off your shoulder, and you're holding the gun tight and following through on the trigger, and it still "doubles", try ditching the trigger and hammer and trying a fresh, real NOS USGI trigger/sear and hammer. Hopefully you can source these vintage GI garand parts and get them into France? Best of luck! The NM is a great rifle when you get the trigger sorted!

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Old March 30th, 2017, 06:18 AM   #15
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I had that happen on my Devine Tx rifle when I changed to a new stock.
Trigger group was too tight so had to slightly relieve the area at the rear of the inletting for the trigger group.
Go slow and try several times or your lock up will be too sloppy.

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