Warning

 

Close

Confirm Action

Are you sure you wish to do this?

Confirm Cancel
BCM
User Panel

Page AR-15 » Build It Yourself
AR Sponsor: bravocompany
Site Notices
Arrow Left Previous Page
Page / 2
Posted: 11/7/2020 12:42:07 PM EST
BCG stuck to the rear.
Can’t separate the upper and lower
Can’t remove buffer tube.
How can I get this moved forward?
Link Posted: 11/7/2020 1:25:57 PM EST
[#1]
Take the stock/brace off.  Does the receiver extension have a drain hole in the end?  If so, stick a metal rod or long, blunt nail and push the buffer forward.  Be aware that that end of the buffer has a polymer plug, so anything sharp could damage that plug.  If there is no drain hole, you could drill a drain hole large enough to accommodate a rod to push everything back towards battery.
Link Posted: 11/7/2020 1:47:07 PM EST
[#2]
Link Posted: 11/7/2020 2:03:53 PM EST
[#3]
Carrier likely traveled too far to rear.
I have heard of the mortar drill hitting the stock on the ground but not the barrel.
Link Posted: 11/7/2020 2:22:36 PM EST
[#4]
Link Posted: 11/7/2020 2:58:02 PM EST
[#5]
So typical mortar drill. Maybe pops it loose.
Can try that
Link Posted: 11/7/2020 3:24:01 PM EST
[#6]
Why can't you take the tube off?
Link Posted: 11/7/2020 3:31:07 PM EST
[#7]
Quoted:
BCG stuck to the rear.
Can’t separate the upper and lower
Can’t remove buffer tube.
How can I get this moved forward?
View Quote


Did this occur after firing?
Link Posted: 11/7/2020 3:35:04 PM EST
[#8]
Link Posted: 11/7/2020 3:48:29 PM EST
[#9]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Carrier likely traveled too far to rear.
I have heard of the mortar drill hitting the stock on the ground but not the barrel.
View Quote


Why do you think this? Is it a 9mm or other pistol caliber? Bolt catch still functional or did it break?

You should be able to unscrew the extension tube if the mortar drill doesn't work.
Link Posted: 11/7/2020 3:51:55 PM EST
[#10]
Discussion ForumsJump to Quoted PostQuote History
Quoted:


Why do you think this? Is it a 9mm or other pistol caliber? Bolt catch still functional or did it break?

You should be able to unscrew the extension tube if the mortar drill doesn't work.
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Quoted:
Carrier likely traveled too far to rear.
I have heard of the mortar drill hitting the stock on the ground but not the barrel.


Why do you think this? Is it a 9mm or other pistol caliber? Bolt catch still functional or did it break?

You should be able to unscrew the extension tube if the mortar drill doesn't work.


This is what I thought too.
Something is keeping me from unscrewing the tube.
It started to turn and then something is stopping it.

This did not happen after firing.

This is a 5.56 rifle not a pencil barrel
Link Posted: 11/7/2020 4:18:18 PM EST
[#11]
The tube must be being held by the buffer detent.
Link Posted: 11/7/2020 5:13:39 PM EST
[#12]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
The tube must be being held by the buffer detent.
View Quote


Good call, it didn’t fall out with the spring
Link Posted: 11/7/2020 9:07:46 PM EST
[#13]
Got the tube off.
The spring catch came loose and was in the tube.
The bcg is sticking out the back jammed tight now
Link Posted: 11/7/2020 9:20:25 PM EST
[#14]
Got spring out for the buffer catch.
Never did see the detent for the rear pin.
What can be holding the bcg in place?
Link Posted: 11/7/2020 10:10:09 PM EST
[#15]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
The tube must be being held by the buffer detent.
View Quote


This is a good reason to not use a receiver extension with a slot for the buffer retainer.
Link Posted: 11/7/2020 10:28:45 PM EST
[#16]
Discussion ForumsJump to Quoted PostQuote History
Quoted:This is a 5.56 rifle not a pencil barrel
View Quote


I'm curious, what exactly does this mean, and what does the barrel have to do with the problem?
Link Posted: 11/7/2020 10:57:34 PM EST
[#17]
Discussion ForumsJump to Quoted PostQuote History
Quoted:


I'm curious, what exactly does this mean, and what does the barrel have to do with the problem?
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Quoted:This is a 5.56 rifle not a pencil barrel


I'm curious, what exactly does this mean, and what does the barrel have to do with the problem?


Nothing that I know of.
Someone had made mention of caliber when talking mortar method and possibly doing by banging the rifle on its barrel instead of stock
Link Posted: 11/7/2020 10:58:54 PM EST
[#18]
Discussion ForumsJump to Quoted PostQuote History
Quoted:


This is a good reason to not use a receiver extension with a slot for the buffer retainer.
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Quoted:
The tube must be being held by the buffer detent.


This is a good reason to not use a receiver extension with a slot for the buffer retainer.


Any idea what could be holding the bcg?
Link Posted: 11/8/2020 2:17:26 AM EST
[#19]
Discussion ForumsJump to Quoted PostQuote History
Quoted:

Nothing that I know of.
Someone had made mention of caliber when talking mortar method and possibly doing by banging the rifle on its barrel instead of stock
View Quote


I mentioned pistol caliber because with a 9mm BCG a longer buffer is used. If a standard length buffer is used the carrier will travel back too far and can break the bolt catch.    

Don't know anything about the barrel comment...

So the carrier is stuck in the receiver even with the extension tube removed? What were you doing when this happened? Sounds like you weren't firing the gun.

You didn't by chance remove the firing pin did you? The firing pin prevents the can pin from rotating. It would jam the carrier same as your experiencing.  


Link Posted: 11/8/2020 7:17:16 AM EST
[#20]
I've only had one bcg stuck to the rear.  Blown primer got back in there and hung it up pretty good.  Didn't know that till it fell out while pounding the bcg forward.

I got the stock/buffer tube off and bounced the bolt against a board a couple times.  The bolt went forward, got the upper/lower separated and the primer fell out.  Put it all back together and went on shooting.

Weird shit happens sometimes.
Link Posted: 11/8/2020 8:24:32 AM EST
[#21]
Discussion ForumsJump to Quoted PostQuote History
Quoted:

You didn't by chance remove the firing pin did you? The firing pin prevents the can pin from rotating. It would jam the carrier same as your experiencing.  


View Quote

Link Posted: 11/8/2020 8:29:04 PM EST
[#22]
Firing pin was not removed
Is my only choice to pound this forward?
Link Posted: 11/8/2020 9:09:11 PM EST
[#23]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Firing pin was not removed
Is my only choice to pound this forward?
View Quote


Pretty much. If you got the reciever extension off, you can try popping the pivot pin out and raking the entire upper off, but that will be a challenge.
Link Posted: 11/8/2020 10:53:48 PM EST
[#24]
I wouldn't bang on it....yet.

Can you post a picture of what it looks like? Otherwise we don't know how far its stuck into the receiver to give any guidance.

What were the steps that lead up to this problem happening?

Can you move the charging handle or is it jammed tight?

Link Posted: 11/9/2020 7:42:37 AM EST
[#25]
The upper and lower receiver are still together.
The CH moves but cannot come out because the upper and lower are still together.
It is sticking out the back ~4”.
The upper and lower were put together with the BCG and CH in place.  No spring or buffer. No real amount of oil lube.
Link Posted: 11/9/2020 7:47:17 AM EST
[#26]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
The upper and lower receiver are still together.
The CH moves but cannot come out because the upper and lower are still together.
It is sticking out the back ~4”.
The upper and lower were put together with the BCG and CH in place.  No spring or buffer. No real amount of oil lube.
View Quote


Now all the facts come out.

Why was it put together with no buffer or spring?
Link Posted: 11/9/2020 7:52:32 AM EST
[#27]
You say no spring or buffer?

was it fired like that?

my guess is the gas key is wedged into the lower's buffer tube hole.


Link Posted: 11/9/2020 7:56:26 AM EST
[#28]
Try to protect the barrel or take it off and mortar it the other way
Link Posted: 11/9/2020 7:57:21 AM EST
[#29]
post pictures from every angle
Link Posted: 11/9/2020 7:59:35 AM EST
[#30]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
You say no spring or buffer?

was it fired like that?

my guess is the gas key is wedged into the lower's buffer tube hole.


View Quote


If it was fired that could be a pain in the butt to get apart.
Link Posted: 11/9/2020 8:37:08 AM EST
[#31]
Link Posted: 11/9/2020 9:56:06 AM EST
[#32]
It was never fired.
It was put together to check fit
The CH was pulled without thinking
Link Posted: 11/9/2020 5:59:59 PM EST
[#33]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Got spring out for the buffer catch.
Never did see the detent for the rear pin.
What can be holding the bcg in place?
View Quote


Are you referring to the detent spring for the rear pin or the buffer retainer spring? Is the buffer retainer plunger still in there?

Can you move the charging handle?? It may have dropped out of the slot that it normally rides in when there was no tension on the carrier by a buffer system.  If this is the case, you will want to pull the carrier out and not try to push it in.

Link Posted: 11/9/2020 6:25:42 PM EST
[#34]
Pop both take down pins and wiggle the shit out of it pulling the upper forward.

If that doesn't work, pop the trigger pins too.

Link Posted: 11/10/2020 5:25:29 AM EST
[#35]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
It was never fired.
It was put together to check fit
The CH was pulled without thinking
View Quote


I did that once.

Only once
Link Posted: 11/10/2020 12:14:32 PM EST
[#36]
Discussion ForumsJump to Quoted PostQuote History
Quoted:

I did that once.

Only once
View Quote


Can you provide some insight on what the outcome was? May help the OP here....

@Bucket-Back
Link Posted: 11/10/2020 1:05:23 PM EST
[#37]
I think your gas key is wedged in the lower RE hub and your hammer is wedged between the carrier face and the rear of the bolt lugs.
Link Posted: 11/10/2020 2:39:51 PM EST
[#38]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
It was never fired.
It was put together to check fit
The CH was pulled without thinking
View Quote



If you have not fixed the issue yet can you post a few pics so we can help you move forward. I put together so cheap parts and tried to duplicate what you did and all the recommendations solved the problems the way I had it set up.
Link Posted: 11/10/2020 10:25:43 PM EST
[#39]
I haven’t had time to work on it for a few days.
Going to try’s few of the suggestions
Link Posted: 11/10/2020 10:40:27 PM EST
[#40]
We need pics. I've pulled the bolt back with no spring or buffer more than once and every time was able to just shake the rifle forward and it popped right out.
Link Posted: 11/10/2020 10:53:53 PM EST
[#41]
What I think happened was the bolt was pulled back with no buffer and spring. The buffer retaining pin is logged in somewhere preventing it to move forward. Maybe see if you can put a cleaning rod down the barrel and push the bolt far enough back to see if you can separate the upper an lower or push in from the drain hole on the bolt pushing it forward.
Link Posted: 11/10/2020 11:13:42 PM EST
[#42]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
I haven’t had time to work on it for a few days.
Going to try’s few of the suggestions
View Quote


Did you pull the trigger after pulling back the CH? I had a guy do that with no spring/buffer and the hammer came up and blocked the carrier.

Pop the takedown and pivot pin. Knock out the hammer pin and wiggle everything about and see if it slacks up.
Link Posted: 11/11/2020 8:59:15 AM EST
[#43]
I got the stock/buffer tube off.
The buffer spring retainer and spring are out.
Looking through the ejection port, I don't believe the hammer is in the way.
I can pull the CH almost all the way out but it gets stopped.  It moves freely in and out.  Just not all the way out.
The bolt carrier can be wiggled.  It is stocking out the back ~3+".

I will post some pictures later this evening.

I haven't hammered on the BC.
I haven't pulled the pins to separate the receivers.

That is my next step in the next day or so.
Thanks for the help and info.
I appreciate all the constructive comments and suggestions.
Link Posted: 11/11/2020 9:30:39 AM EST
[#44]
Maybe pop the grip, and take out the pin that normally holds the buffer?
Link Posted: 11/11/2020 9:49:39 AM EST
[#45]
Drop rifle on the muzzle.

Now with the RE removed, just whack the bcg forward.
Link Posted: 11/11/2020 9:52:41 AM EST
[#46]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Maybe pop the grip, and take out the pin that normally holds the buffer?
View Quote

The pin in the grip location is the selector detent and spring not the buffer retaining pin.
Link Posted: 11/11/2020 1:26:35 PM EST
[#47]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
I got the stock/buffer tube off.
The buffer spring retainer and spring are out.
Looking through the ejection port, I don't believe the hammer is in the way.
I can pull the CH almost all the way out but it gets stopped.  It moves freely in and out.  Just not all the way out.
The bolt carrier can be wiggled.  It is stocking out the back ~3+".

I will post some pictures later this evening.

I haven't hammered on the BC.
I haven't pulled the pins to separate the receivers.

That is my next step in the next day or so.
Thanks for the help and info.
I appreciate all the constructive comments and suggestions.
View Quote


It does sounds like the trigger got pulled and the hammer is caught between the carrier and the bolt preventing movement of the BCG. I think someone mentioned this earlier.

Pull the receiver pins and I think it will come apart enough so you can reach the hammer and lock it back and remove the BCG.

Banging on shit is never really a good solution unless its a nail....
Link Posted: 11/12/2020 8:46:54 AM EST
[#48]
Photos from this am.
Have not done anything with it for a couple of days




Link Posted: 11/12/2020 8:50:24 AM EST
[#49]
Following
Link Posted: 11/12/2020 9:02:52 AM EST
[#50]
Have you tried popping the pins and splitting the receivers?
Arrow Left Previous Page
Page / 2
Page AR-15 » Build It Yourself
AR Sponsor: bravocompany
Close Join Our Mail List to Stay Up To Date! Win a FREE Membership!

Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. One new winner* is announced every week!

You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers.


By signing up you agree to our User Agreement. *Must have a registered ARFCOM account to win.
Top Top