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This is a discussion on New AR556 question within the Ruger Semi-Auto forums, part of the Rifle & Shotgun Forum category; Hi Everyone, I am a 30+ year Ruger owner and a new AR556 owner. I have noticed that the charging handle of my new AR556 ...


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Old March 7th, 2017, 03:49 PM   #1
 
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New AR556 question

Hi Everyone,
I am a 30+ year Ruger owner and a new AR556 owner. I have noticed that the charging handle of my new AR556 rubs on the castle nut. My other AR's (non-rugers) do not do this, the handles ride above the castle nut.

I called Ruger customer service and they said it can be normal. I had also found their web site and posted the question to customer service and gave them a link to a photo. Now they have contacted me back and say they would like to have me send the gun in for evaluation.

The gun functions/cycles perfectly, has a much better than expected trigger based on the reviews I have read, and it was easy to zero. So I am at a cross roads, Ruger says they may want replace it depending on their review, but everything else is so nice that now I am not sure about a replacement.

So my question, is it normal for the charging handle on some AR's to make contact with the castle nut? If so, I think I want to keep this gun, what do you all think?

Thank you in advance!



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Old March 7th, 2017, 04:55 PM   #2
 
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Mine does not .
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Old March 7th, 2017, 04:57 PM   #3
 
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Originally Posted by pennsy View Post
Mine does not .
Thank you very much for your response! I wish I could post a photo, but I am new here and my post count is too low to add links or photos at this point.
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Old March 7th, 2017, 05:09 PM   #4
 
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Mine rubs ever so lightly (polished is a better description) on the receiver but not at all on the castle nut. If Ruger wants to check it for you just send it in. It won't cost anything except a week or two turnaround.
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Old March 7th, 2017, 05:16 PM   #5
 
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Mine rubs ever so lightly (polished is a better description) on the receiver but not at all on the castle nut. If Ruger wants to check it for you just send it in. It won't cost anything except a week or two turnaround.
Yes, my other AR's always have polish marks on the flat boss on top of the lower receiver, but not on the castle nut. This almost looks like they possibly machined the boss on the top of the lower down a little too much. ????
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Old March 7th, 2017, 05:23 PM   #6
 
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Originally Posted by AR GRIFF View Post
Yes, my other AR's always have polish marks on the flat boss on top of the lower receiver, but not on the castle nut. This almost looks like they possibly machined the boss on the top of the lower down a little too much. ????
None of mine do, or have ever done that. I think Ruger needs that one back.

And I think they know that. The could have offered to send you a new charging handle, as that would be the easy fix to try.

That way at least you would know if it was in the machining on the receiver. which Im kinda suspecting it is.

Good luck. .
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Old March 7th, 2017, 05:39 PM   #7
 
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None of mine do, or have ever done that. I think Ruger needs that one back.

And I think they know that. The could have offered to send you a new charging handle, as that would be the easy fix to try.

That way at least you would know if it was in the machining on the receiver. which Im kinda suspecting it is.

Good luck. .
Excellent point, I have tried different charging handles, no change, still contacts the castle nut.

In fact, if I put this complete upper on any of my other AR lowers there is no contact, but any upper that I put on this lower, the charging handle will contact the castle nut.
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Old March 7th, 2017, 08:01 PM   #8
 
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Originally Posted by AR GRIFF View Post
Excellent point, I have tried different charging handles, no change, still contacts the castle nut.

In fact, if I put this complete upper on any of my other AR lowers there is no contact, but any upper that I put on this lower, the charging handle will contact the castle nut.
You obviously have a bad lower then.

YUP. Send it back.
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Old March 8th, 2017, 02:55 AM   #9
 
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Well it's going back today. Thank you for the input everyone, much appreciated, guess I just needed a sanity check. Sorry my first post here had to be an issue, I really am a Ruger fan!
I will let everyone know how this comes out in the end.

Thank you, Griff
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Old March 9th, 2017, 05:31 AM   #10
 
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My charging handle hung up/rubbed on the retention plate and I just filed it down ever so slightly and hit the bare metal with some paint and you can't even tell, just figured something was slightly out of spec and no reason to "lose the rifle for a few weeks." That was about 18 months and 1000 rds ago. Everything still runs great, but like some others said, if Ruger wants to look at it, I'd send it to them.
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Old March 13th, 2017, 03:12 PM   #11
 
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Pics of the issue
side view showing the receiver is shorter than the castle nut.


Wear on castle nut after very little use (80 rounds) so no it wasn't pulled back very many times.
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Old March 13th, 2017, 08:57 PM   #12
 
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My castle nut has a little bit of wear from the charging handle. No big deal. Wear is wear. If you shoot your rifle it will get wear. The problem to look out for is deformations.
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Old March 14th, 2017, 06:55 AM   #13
 
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I have extremely little experience with AR's. I just checked my 2 custom builds (.223/5.56 & 22lr on 80% lowers).
No signs of wear, charging handle clears just fine.
I wonder if the AR556 has a taller castle nut? Both of mine are flush with the frame.

Sent from my SM-N910V using Tapatalk

Last edited by patkelly4370; March 15th, 2017 at 06:48 AM.
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Old March 14th, 2017, 07:40 AM   #14
 
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I just looked at my charging handle while cleaning my AR556 and there is no rub marks. Matter of fact the rifle has been shot quite a bit and there are very few wear marks anywhere. Great little rifle.
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Old March 14th, 2017, 07:41 AM   #15
 
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I don't think thats a big deal.......

I'd replace the Castle nut before doing anything.....might have just received one with a little more heft, lol
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