M1A bolt stuck back - Help!! - Page 2 - M14 Forum

M14 Forum


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; With the rifle doing the same thing multiple times even after cleaning and lubing I tend to believe that there are other problems. Could the ...


Go Back   M14 Forum > M14 M1A Forum > Modern M14

27Thanks
Reply
 
LinkBack Moderator Tools Display Modes

Old January 5th, 2010, 09:30 AM   #16
Lifer
 
tmcfalls's Avatar
 
Join Date: Oct 2006
Location: Kentucky
Posts: 4,073
With the rifle doing the same thing multiple times even after cleaning and lubing I tend to believe that there are other problems.

Could the spring be worn out so much that it is allowing the bolt to over travel?

tmcfalls is offline  
Remove Ads
Old January 5th, 2010, 10:14 AM   #17
Lifer
 
Join Date: Oct 2006
Location: Chesterfield, VA
Posts: 3,720
Have you got a "fish scale"? If so, tie it to the op rod handle and pull the bolt to the rear. Record the lbs. it pulls on the scale, then buy/install a new recoil spring and try it again to see how much difference there is. Pull it rearward to the same point both times. Friction/etc. plays into this, too, but should be the same if all you change out is the recoil spring, then you should be measuring the difference in the springs.

As to the lube vs. the number of rounds fired, all I can say is that three years ago I put a couple of hundred rounds a day through my M1A and the lube I used was just 3n1 oil. I still wasn't "greasing" my M1A at that time. I cleaned it every night and re-lubed it for the next day's shooting but I know mine will go that long with no issues without grease. Grease should last longer than plain old 3n1 oil.

M1A's r BEST is offline  
Old January 5th, 2010, 11:23 AM   #18
Snappin In
 
Join Date: Jan 2010
Location: Fontucky, CA.
Posts: 27
Gunsmith

Quote:
Originally Posted by M1AallTheWay View Post
Welcome to the Forum!



I'd agree with that with the caveat that the gunsmith should be very familiar with the M14/M1A platform.
May do that. The rifle is brand new from Springfield Armory. My thinking is I'll break it down, clean and grease per the instructions in Tonyben's tutorial, and check for burrs or something amis on the bolt and heel of the receiver to determine why it might have got caught back there. It happened twice within 20 rounds, but this was after firing over 300 trouble free.

Then, I'll take it out shooting to see what happens. If the problem recurs, I'll contact Springfield. May have to ship it back to them to have a look.

I suppose the laquer coating on the Wolf ammunition might have gunked things up a bit. The barrel was extremely dirty and I must have put 20 patches through it last night before it was clean.

Regards,

John

Thanks from wcoyne
JohnHarden is offline  
 
Old January 5th, 2010, 11:29 AM   #19
Lifer
 
82nd ABN's Avatar
 
Join Date: Jan 2009
Location: Long Island NY
Posts: 10,888

Awards Showcase

I think we are forgetting something here. The op rod will travel the distance with a new or old spring. If it was jammed back as bad as it was no spring is going to overcome the jam. Bottom lime is it jammed to the rear and should be taken to a smith if it can't be diagnosed here on the forum. It one of two things the bolt or the op rod.

Thanks from charliefrye
82nd ABN is offline  
Old January 5th, 2010, 11:39 AM   #20
Super Moderator
 
tonyben's Avatar
 
Join Date: Apr 2007
Location: Beaverton, OR
Posts: 9,077

Awards Showcase

The op-rod is supposed to be limited by the shank of the op-rod. It hits the face of the receiver and that's what stops rear movement.

tonyben is offline  
Old January 5th, 2010, 11:41 AM   #21
Platoon Commander
 
Join Date: Mar 2008
Location: CA
Posts: 508
somebody needs to post a sticky on not using wolff ammo. you will end up breaking something.

Thanks from Wasted ammo
darkjedi351 is offline  
Old January 5th, 2010, 11:47 AM   #22
Old Salt
 
Join Date: Aug 2007
Location: NY
Posts: 1,848

Awards Showcase

Quote:
Originally Posted by tonyben View Post
The op-rod is supposed to be limited by the shank of the op-rod. It hits the face of the receiver and that's what stops rear movement.
That's what stops the movement of the op-rod but is it also what stops the bolt? The pictures show that with the bolt stuck in the receiver, the op-rod has been pushed away from the receiver face by the spring.

I'm wondering if there are dimensional issues with the receiver - inadequate space in the rear for the bolt or the grooves the bolt lugs ride in, or maybe in the receiver bridge.

M1AallTheWay is offline  
Old January 5th, 2010, 11:47 AM   #23
Snappin In
 
Join Date: Jan 2010
Location: Fontucky, CA.
Posts: 27
Quote:
Originally Posted by tonyben View Post
The op-rod is supposed to be limited by the shank of the op-rod. It hits the face of the receiver and that's what stops rear movement.
The bolt was all the way back against the heel of the receiver. The op rod had about 1/2 of play in it and would move back and forth. The bolt was simply stuck back.

Called Springfield and they offered to take it back to have a look or advised that since it was sliding well now that I could go fire it a bit to see if it happens again.

I'm wondering if there is a slight burr or something back there that it was hanging on.

Is there a sticky or post on how to remove the bolt from the rifle to check it over?

Regards,

John

JohnHarden is offline  
Old January 5th, 2010, 11:50 AM   #24
Old Salt
 
Join Date: Aug 2007
Location: NY
Posts: 1,848

Awards Showcase

Quote:
Originally Posted by darkjedi351 View Post
somebody needs to post a sticky on not using wolff ammo. you will end up breaking something.
This: http://www.m14tfl.com/upload/showthread.php?t=78951 would be a good place to start.

M1AallTheWay is offline  
Old January 5th, 2010, 12:52 PM   #25
Snappin In
 
Join Date: Jan 2010
Location: Fontucky, CA.
Posts: 27
Gunsmith

Quote:
Originally Posted by M1AallTheWay View Post
Welcome to the Forum!



I'd agree with that with the caveat that the gunsmith should be very familiar with the M14/M1A platform.
I haven't fired it again yet, but it seems to cycle normally.

Springfield has offered to take the rifle in and check it over. They also said I could just shoot it again to see what happens.

What do you guys recommend? Should I give it a shot (literally), or ship it back?

I'm thinking the worst that could happen is it'll stick back again, and if so, then I'll send it back.

Thoughts?

JohnHarden is offline  
Old January 5th, 2010, 02:45 PM   #26
Squad Leader
 
Join Date: Jul 2007
Location: Nebraska
Posts: 282
JohnHarden, just out of curiosity, what is the approximate S/N range of your Scout? I have one that did what you describe just from being cycled by hand.

tjh121 is offline  
Old January 5th, 2010, 03:08 PM   #27
Lifer
 
JayKosta's Avatar
 
Join Date: Mar 2009
Location: Endwell NY
Posts: 2,112
1) Did the inside of the chamber clean-up to be nice and smooth?
If the chamber is rough then I'd talk with SAI again and describe the chamber's condition.

2) Avoid doing extended firings - more than about 100 shots - without cleaning the old lube and then re-lubing.
A basic cleaning of the old lube can be done by just removing the trigger group, and using Q-tips to wipe out the old lube and goop.
Then use fresh Q-tip to apply grease to the points in Tony's article.
Be sure to put new grease in the op-rod hump cut-out that controls the righthand bolt lug. Also learn about lubing the roller on the bolt lug.

3) Make sure that the extractor is pushed down completely into the bolt, it can sometime ride up and cause problems.

4) The rifle is designed to feed FMJ type ammo; rounds like the ones you showed have quite a bit of exposed lead on their tip - that lead can easily get caught or shaved during the feeding cycle of the round into the chamber.

Jay Kosta
Endwell NY

JayKosta is offline  
Old January 5th, 2010, 04:21 PM   #28
Dodgin' The Reaper
 
Join Date: Dec 2009
Location: Austin, TX, USA
Posts: 5,679
You've learned something about "hot" ammo. I hope your op rod isn't bent. If you haven't gotten that deep into the plumbing of these rifles, sure, let SAI check it out - that in particular. Your receiver did its job containing the bolt's rearward thrust. That's a good thing.

bd111 is offline  
Old January 5th, 2010, 08:20 PM   #29
Snappin In
 
Join Date: Jan 2010
Location: Fontucky, CA.
Posts: 27
Scout

Quote:
Originally Posted by tjh121 View Post
JohnHarden, just out of curiosity, what is the approximate S/N range of your Scout? I have one that did what you describe just from being cycled by hand.
Serial number 240XXX. Not sure when it was manufactured, but it was new in the box and I just picked it up on 12/31.

Regards,

John

JohnHarden is offline  
Old January 5th, 2010, 08:21 PM   #30
Snappin In
 
Join Date: Jan 2010
Location: Fontucky, CA.
Posts: 27
Ammo

Quote:
Originally Posted by bd111 View Post
You've learned something about "hot" ammo. I hope your op rod isn't bent. If you haven't gotten that deep into the plumbing of these rifles, sure, let SAI check it out - that in particular. Your receiver did its job containing the bolt's rearward thrust. That's a good thing.
I was 150 rounds into a box of 200 Winchester, 7.62 NATO when this happened. Is this known to be a hot round?

JohnHarden is offline  
Reply

  M14 Forum > M14 M1A Forum > Modern M14

« SA scout | Sage EBR »

Search tags for this page
airsoft m14 bolt lever stuck
,

bolt on m1a wont go forward

,

bolt stuck forward m14

,
charging handle on m1a wont come off
,
jammed m14 bolt
,

m14 bolt locked to the rear

,

m14 bolt stuck

,

m1a bolt jam

,

m1a bolt roller jam

,

m1a bolt stuck

,

m1a magazine stuck

,

springfield m1a charging handle

Click on a term to search for related topics.

Moderator Tools
Display Modes


Similar M14 Forum Discussions
Thread Thread Starter Forum Replies Last Post
M1A bolt stop problem Friedenmeister The M14 31 March 30th, 2012 06:38 PM
Report on new LRB M14 bolt Ted Brown The M14 13 August 31st, 2010 07:49 PM
Bolt does not lock back Eric73 M16 AR15 23 November 21st, 2009 02:19 PM
Live/Dud round stuck in chamber - HELP! *UPDATE* Gascozark M16 AR15 12 January 7th, 2009 03:41 PM
Remember my thread on bolt lapping? Well, I did it myself!! Balming The M14 13 December 17th, 2006 04:45 PM



Top Gun Sites Top Sites List