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M1A bolt stuck back - Help!!

This is a discussion on M1A bolt stuck back - Help!! within the Modern M14 forums, part of the M14 M1A Forum category; Take the barreled action out of the stock. Take the op rod spring and guide out. Lift the front of the rifle upwards a little ...


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Old January 5th, 2010, 08:50 PM   #31
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Take the barreled action out of the stock. Take the op rod spring and guide out. Lift the front of the rifle upwards a little over 45 degrees see if the op rod and bolt fall to the rear smoothly or if there is someplace it is catching. If it is catching or bumping - exactly where is the bolt and op rod when it is happening? Can you take a picture?

Take the bolt and op rod out of the rifle. Turn the receiver upside down. On the underside of the heel of the receiver, does it look like the bolt is really wearing or gouging into the receiver? If so, can you take a picture?

Look at the safety bridge of the receiver. That is the metal bridge between the two legs of the receiver and has a sort of "U" shaped curved surface the bolt rides over. Are there burrs there are can you see a ding that has been gouged upward? If so, can you take a picture?

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Old January 6th, 2010, 04:07 PM   #32
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Thanks to all of you who offered advice and encouragement.

After thinking it over and talking to Springfield, I elected to send it off to them to look at. The rifle is brand new and covered by their life time warranty.

It has one other issue in that the rear sight does not operate smoothly. The windage knob will not click left of the center line, no matter how it is adjusted. It simply slides. One click of the split set screw in either direction makes it either too loose to even work, or so tight that the windage knob won't move at all, even after repeated dissassembly and adjustments with the help of Springfield. Elevation knob works okay, but something is out of whack.

They offered to send me a new windage knob and if that didn't fix it, a whole new rear sight.

By sending the rifle to them, they can check it out and correct both issues for me. They strongly advised against filing or polishing down burrs or anything on the rifle as this would void the warranty.

As you can probably tell, I'm no gunsmith, so I elected to have them take care of it. Clearly, something is hanging up as it takes quite a bit of force to hold the bolt back rearward against the tension of the spring.

They cover all the costs and sent me a shipping label. I dropped it off at Fedex just now, so its on its way back to them.

I'll let you know what happens with it.

Thanks again for all the helpful advice!!!!!

Regards,

John

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Old January 6th, 2010, 07:33 PM   #33
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If SAI wanted to get nasty they could point out the you've already voided your warranty by shooting steel cased ammo. However, my experience with them is that as long as your haven't done anything to deliberately bung something up they will take care of you. A much maligned company, but they do seem to stand by their products.......eventually. Luck!!!

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Old January 27th, 2010, 12:49 PM   #34
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New Receiver

OP here. Springfield just called and they decided to replace the entire receiver on the rifle.

Customer service didn't have any notes in the computer yet that described why they did this, but she did say that a receiver replacement is extremely rare.

The advice I got here that something was probably machined incorrectly sounds correct. I guess it takes a lot of force for the bolt to stick back and hold the compressed spring at bay, so something was clearly amiss back there. Rifle was brand new with less than 500 rounds through it.

The rear sight was not functioning properly either, so I guess they fixed or replaced it too.

Ships out to me today, so I should be able to go shooting with it late next week or the weekend. I guess it now also has a new serial number.

No charge of course and Springfield even paid for shipping both ways, so you can't complain about that superior customer service!!!!

Thanks again for all the advice!!!

Regards,

John

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Old January 29th, 2010, 12:59 PM   #35
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Please post the results/report from the factory that summarizes the problem and the steps that were performed by them for repair. I am curious.

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Old January 30th, 2010, 09:58 AM   #36
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Glad to hear SAI is taking care of you!!

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Old February 2nd, 2010, 01:51 PM   #37
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Quote:
Originally Posted by bradleyswine View Post
Please post the results/report from the factory that summarizes the problem and the steps that were performed by them for repair. I am curious.
Rifle arrived at my doorstep today. They definitely put a new receiver on it as it has a new serial number.

Rear sight now seems to function just fine, which is nice.

The report from the factory simply says that they installed a new receiver and set the head spacing. It doesn't indicate what was wrong with the other one.

The rear sight that is on it is the same one that was there originally, so my guess is the receiver was out of spec to a degree that the sight would not function properly.

Since they replaced the whole thing, I imagine that it also solved the issue of the bolt holding open. Must have been too tight at the rear of the reciever, or perhaps a burr or something that it was catching on.

I'll go shoot it this weekend if it isn't raining.

Thanks again for all the helpful advice.

Regards,

John

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Old February 2nd, 2010, 10:44 PM   #38
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SA does have a good warranty and my experience with them has been positive. Helps justify the price some.

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Old February 3rd, 2010, 09:06 PM   #39
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I didn't think they would air their dirty laudry by telling you their mistake, nonetheless I would call the place back and demand a full explanation in writing, not phone heresay, they owe you that and I think you should tell them they owe you an explanation, you or someone nearby could have been seriously injured or worse. Mine "WILL" have an explanation of all work performed on the unfinished chamber and why it was sold in that shape or they will get more than a phone call from someone that knows how to talk their language. Went a little over there, sorry, I am going through it with them , if you haven't guessed by now, on my rifle. It's getting lonesome around here without it.........Glad you got yours all straight and returned. I have been following your plight as well as many others with Springfields and frankly am starting to wonder how so many screwed up weapons leaving the factory have not cost someone their life yet, maybe they have and we just don't about it, I sincerely hope not and have hopes that SAI will turn it around and continue to turn out a quality firearm.

Thanks from nra lifer 1980
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Old February 6th, 2010, 11:05 AM   #40
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I never felt that the rifle was unsafe. I'm not even convinced that there was anything seriously amiss with it. I neglected to grease the receiver as I should have before shooting it.

The day the bolt stuck back I had fired over 350 rounds through it flawlessly.

It could have just been the op rod haning up on something.

The notes they had in the computer said that replacing the receiver was necessary in order for the rear sight to work properly. That's good enough for me.

I took it shooting on Wednesday and shot about 350 rounds through it. Rifle and rear sight both worked perfectly, so I'm very happy with the way it was handled.

Ripsaw, I'm sure they'll take good care of you.

Regards,

John

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Old February 6th, 2010, 12:46 PM   #41
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It appears that your problem with the rear sight was a fault with the receiver?

If you go with a NM rear sight assembly, you will find after cutting the sides, and a little off the aperture tip bottom, that your windage knob is still to tight to move right clockwise turning, and turning left counter clockwise it just unscrews the knob. If this happens, removing metal from the aperture tip top will allow you to use the windage knob correctly.
I guess I need to take my rear sight apart and take a few picture's.


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Old February 6th, 2010, 03:39 PM   #42
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I've owned several m1a's with no malfunctions and a recent scout I purchased at times (5 total) the bolt didn't slam all the way forward. I was looking inside the receiver on the roof just below where the rear site is located and it seems a bit sketchy on the machining. Once I drop mag out I'm able to pull round out of chamber and slide bolt back and it seems to function properly and I can continue to shoot. I brought it home and lubed it up and the op rod did seem a bit rough so I lubed that as well. I'm hoping I don't have same problem.

First time I notied this I chambered first round from mag and just happend to look down and noticed bolt was 1/4" from being full forward.

L

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Old December 10th, 2016, 03:59 PM   #43
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14982x same occurence in a new from box 2002

I suffered the same issues from above exactly to the letter other than the ammunition used....... ammunition used is 1994 radway green surplus...

Rifle contains an H&R op rod and barrel....

this post has helped a lot... gotta love the search engine...

Rifle has seen 300 rounds approximately and then I just had this one time occurrence. A wooden brush handle tapped with a handle and the mechanism was free. I checked for wear and anything out of the ordinary then reassembled and fired another 100 rounds without a single mishap.... My rifle however contains a shok buff. There was no tatter nor any compression in my shok buff, as like the main op's post, my rifle was identical in the position as his.....

I have half a dozen of these rifles of different variants from different manufacturers.... I don't over lube my rifles, but... this is my first occurrence...
Attached Images
File Type: jpg rec1.jpg (42.8 KB, 60 views)
File Type: jpg rec2.jpg (34.0 KB, 55 views)
File Type: jpg rec5.jpg (53.3 KB, 51 views)
File Type: jpg rec3.jpg (45.7 KB, 52 views)

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Old December 10th, 2016, 08:03 PM   #44
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I believe my receiver may be out of spec....

As you can see in the pics, it appears I have some burs where my firing pin rode over the bottom inside corner of the receiver. And... It appears the tab, or wing, or whatever the proper term may be.. had become stuck on the crisp line beneath the inside groove. It has destroyed that part of the receiver and I believe if I filed the burs away I would have even a greater chance of this occurring once again. This is one of those receivers with that extra eighth of an inch depth on the charging handle side which sometimes makes stock fitting an issue and I see some members with similar receivers have had that section milled flat from a reputable gunsmith. This rifle is going back to SAI for evaluation and repair. In picture three you can see the groove and the location the bolt had stuck after it had jumped from its track.
Attached Images
File Type: jpg bunk1.jpg (31.4 KB, 44 views)
File Type: jpg bunk2.jpg (24.7 KB, 42 views)
File Type: jpg bunk3.jpg (38.1 KB, 49 views)

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Old December 11th, 2016, 07:07 AM   #45
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New or old the op rod an bolt should travel freely its entire travel. If not lube or grease will not solve a mechanical fit or clearance problem. I love the sound of an action (minus the recoil spring) that is tipped back and forth and hearing the op rod and bolt slide back and forth.

Good to hear SA fixed you up.
(Grease it up and don't forget the bolt roller)

Thanks from DudleyDR and stihl73
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