Bolt keeps getting stuck in chamber - Page 1

AR-15 » AR Discussions

AR Sponsor:

Site Notices

TNVV/NG/PVS-14-GP – U.S. Gen3 Filmed Green Phosphor! $2599

AMA With Pete Brownell (Owner of Brownells, Crow, & AR15.com)

[ARCHIVED THREAD] - Bolt keeps getting stuck in chamber

Posted: 9/24/2019 11:01:44 PM EST

Over the past few times I went to the range I am having the same issue. After a few rounds fired the bolt on my AR15 gets stuck in the chamber. It stacks very hard and I have been sticking a screwdriver through the mag well and porying it open. Although I did just learn the proper way tc clear it by mortering it.

Anyways, the 1st time this happened I reached out to Daniel Defense to set up an RMA. I took it out Saturday and it shot fine so I canceled the RMA. Today I went and the same thing happened. Today, I also brought my AR pistol and the same thing started happening to that.

I recently purchased 1k rounds of 55 grain M193 FMJ Ball Range Grade Ammo from Fedarm. Apparently it is once fired military & police ammo that has been reloaded.

I am assuming this could be the issue?

Any help is appreciated.

Thanks!

Posted: 9/24/2019 11:09:33 PM EST

[#1]

If it’s happening in two rifles that didn’t previously have the issue I’d say it’s the ammo. Try another ammo

Posted: 9/24/2019 11:24:41 PM EST

[#2]

NM, you knew about mortaring it.

+1 Change ammo.

Posted: 9/24/2019 11:34:21 PM EST

[#3]

Start with ammo.

Posted: 9/25/2019 1:56:57 AM EST

[#4]

Probably not your issue, but check to make sure the gas-key is PERFECTLY round.
I had one that was just a tiny bit flat on the top, and it would OFTEN catch on the gas-tube in the gun.

Posted: 9/25/2019 2:12:21 AM EST

[#5]

My guess is that the ammo was not resized to original specs and you have a tight chamber.

I built an AR with a DD barrel and BCG that was a little on the tight side and would do this. After a couple hundred rounds it broke in.

Posted: 9/25/2019 7:47:25 AM EST

[#6]

When remanufactured ammo is in the mix that's the first place I'd look.

Posted: 9/25/2019 8:18:56 AM EST

[#7]

Quote History

Quoted:
When remanufactured ammo is in the mix that's the first place I'd look.

View Quote

This. With how cheap quality factory ammo is today and how many issues crop up with these “reloading” companies, I’d never even entertain the thought of buying the reman crap (unless it’s Black Hills).

Posted: 9/25/2019 8:19:05 AM EST

[#8]

Quote History

Quoted:
If it’s happening in two rifles that didn’t previously have the issue I’d say it’s the ammo. Try another ammo

View Quote

Posted: 9/25/2019 8:26:46 AM EST

[#9]

Quote History

Quoted:
When remanufactured ammo is in the mix that's the first place I'd look.

View Quote

This and ammo you did not reload yourself. You could have some out of spec ammo or not properly sized.

Posted: 9/25/2019 8:44:54 AM EST

[#10]

Quote History

Quoted:
If it’s happening in two rifles that didn’t previously have the issue I’d say it’s the ammo. Try another ammo

View Quote

This. That said, you're shooting remanufactered ammo and I'd move away from that.

Posted: 9/25/2019 9:08:09 AM EST

[#11]

Quote History

Quoted:
If it’s happening in two rifles that didn’t previously have the issue I’d say it’s the ammo. Try another ammo

View Quote

This

Posted: 9/25/2019 9:15:02 AM EST

[#12]

OP
If it only happens with your reloaded ammo then you have your answer as several here have pointed out -ammo.
If your ammo was not resized and trimmed to length properly it will cause this problem.
If it happens with other ammo as well then you have to problem solve.

If so, I suggest you clean the rifle really well, including using a bore brush with cleaner/lube of choice - I prefer CLP for this job.
This includes cleaning the BCG really well. Does the BCG slide in and out freely? If not, remove the bolt from the carrier and see if the carrier slides freely.
If the carrier does not engage freely then check the gas key for damage such as being bent.

Ammo and/or a dirty rifle are often the problem.

You can also post these type of questions in Troubleshooting as well.

Posted: 9/25/2019 3:47:10 PM EST

[#13]

I agree with improperly sized brass on the reloads.

Posted: 9/25/2019 6:44:18 PM EST

[#14]

Quote History

Quoted:
I agree with improperly sized brass on the reloads.

View Quote

I could be wrong but swear there was another thread recently about a similar issue and it seemed pretty apparent, just visually (to me anyway), that the ammo hadn't had the shoulder set back properly. I could be mis-remembering...
(Disclaimer: I stay away from reman as well. Factory stuff, or my own loads, that's it.)

Posted: 9/25/2019 6:56:00 PM EST

[#15]

Quote History

Quoted:
Probably not your issue, but check to make sure the gas-key is PERFECTLY round.
I had one that was just a tiny bit flat on the top, and it would OFTEN catch on the gas-tube in the gun.

View Quote

This crossed my mind, too.

OP, pull the bolt from the BCG and drop the BCG back into the upper to check if the gas key is binding up on the gas tube. If the gas key engages and disengages the gas tube freely, then you can at least rule that out. I've read stories of bent or misshapen gas tubes causing hangups.

Posted: 9/25/2019 7:06:16 PM EST

[#16]

I saw this issue many times while working as an RSO. 99% of the time all the rifle needed was a little oil.

Posted: 9/26/2019 5:33:38 AM EST

[#17]

Quote History

Quoted:
If it’s happening in two rifles that didn’t previously have the issue I’d say it’s the ammo. Try another ammo

View Quote

+1.

Remanufactured ammo is your culprit. Want to be sure? Try NEW factory ammo like Fed/American Eagle.

BTW, it is not the bolt stuck in chamber, it is the stuck casing.

[ARCHIVED THREAD] - Bolt keeps getting stuck in chamber

AR-15 » AR Discussions

AR Sponsor:

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.

Warning

Confirm Action

About AR15.COM

Stay Connected

Newsletter

Contact Us