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AR556 properly staked?

This is a discussion on AR556 properly staked? within the Ruger Semi-Auto forums, part of the Rifle & Shotgun Forum category; Hello, Just bought an AR-556 and it looks great. However, I checked the bcg to see if the gas key was properly staked and it ...


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Old June 13th, 2015, 06:42 PM   #1
 
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AR556 properly staked?

Hello,

Just bought an AR-556 and it looks great. However, I checked the bcg to see if the gas key was properly staked and it looks like it isn't. Does it look ok to everyone? Should I ask Ruger to fix it? Thank you!






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Old June 13th, 2015, 08:20 PM   #2
 
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I have seen many that look tighter than that. However it just has to impinge the fastener to keep it from turning.

If it bothers you call Customer Service. Personally, I would put a witness mark on it. I would check when cleaning for 1st few thousand rounds. If it moved I would call CS. If it did't move I would forget about it.

Again it is your trust in the gun. If your not comfortable always call CS.
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Old June 14th, 2015, 04:34 AM   #3
 
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Forgive my stupidity, I'm new to the world of AR's, and fail to see what dosent look right about the above picture. Would y'all mind explaining it to me? Thanks, I've got an SR762, so I haven't had to worry about the gas key.
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Old June 14th, 2015, 04:52 AM   #4
 
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if it bugs you and you feel it needs fixed why wouldn't you just grab a punch and hammer? instead of waiting months for ruger to do something, you could do yourself in less than 2 minutes.
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Old June 15th, 2015, 05:50 PM   #5
 
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Quote:
Originally Posted by snoplow View Post
if it bugs you and you feel it needs fixed why wouldn't you just grab a punch and hammer? instead of waiting months for ruger to do something, you could do yourself in less than 2 minutes.


Possibly because Ruger normally only takes a week or less, does it right and checks over everything else on the gun as well?



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Old June 15th, 2015, 06:46 PM   #6
 
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Quote:
Originally Posted by Jnorton View Post
Forgive my stupidity, I'm new to the world of AR's, and fail to see what dosent look right about the above picture. Would y'all mind explaining it to me? Thanks, I've got an SR762, so I haven't had to worry about the gas key.
http://www.brownells.com/gunsmith-to...prod29337.aspx

The "staking" is a reference to the dimples on each side of the heads of the bolts and is a means to prevent the bolts for working loose during live fire as a result of any vibration etc that is transmitted through the bolt to the screws.

Above is a link to a tool for staking. If you google BCG gas key staking and click on images you can see lots of examples, some more exaggerated than others and some uglier than others.

I don't think that you need to see the metal around the bolt head deformed into the bolt tops of the bolt heads for the staking to be doing its job. So long as some portion of the hole around the screw head is impinging on the screw head it is likely okay. If you were planning to use a bump fire stock and go crazy with full auto or needed to run 10,000 rounds without any disassembly or cleaning etc then maybe a more aggressive staking would be called for.

As to the pic in the OP I don't know if that is normal or not but I do know someone with an AR-556 and I will likely see it Wednesday and can check to see if it looks the same and I can compare it to my Bushmaster as well.

Last edited by mcwsky09; July 3rd, 2015 at 04:10 AM.
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Old June 15th, 2015, 06:59 PM   #7
 
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Take a few more closeup pics of it and email them to Ruger. See what they say. From the image you have posted, it does look as though the metal is impinging on both screws. I'd be very surprised if you ever had a problem.
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Old June 15th, 2015, 09:57 PM   #8
 
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I have yet to see ANY gas key staked in the manner that I was taught as to what 'staking' was. A few years ago before I bought my first AR I looked at a bunch of different pictures of gas keys that were 'staked' and I left being scared to shoot any of them.

Proper staking to me is using a pointed punch to push a sample of the surrounding metal over into the fastener. That way if the fastener wants to turn it has to move that piece metal pushed into it out of the way. I learned that from working on airplane engines. I have yet to see that on an AR.

That being said, can anybody relate a story of a gas key coming off?
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Old June 16th, 2015, 04:35 AM   #9
 
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Thanks for the explanation mcwsky09. I'll give a Google search, so I have a little more knowledge.
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Old June 16th, 2015, 04:52 AM   #10
 
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From that photo and the angle it DOESN'T look properly staked. I'd take some different angle photos (like straight down) and send them off to Ruger. It would also be nice to see better photos here too.
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Old June 16th, 2015, 07:17 AM   #11
 
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Originally Posted by Spike12 View Post
That being said, can anybody relate a story of a gas key coming off?
While not coming off, last fall a friend was shooting his DPMS .204 and the gas key staking was insufficient causing the bolts to loosen in the BCG. The loose key caused multiple failures to cycle properly (FTFeed's).
DPMS gave a couple options, a) send it in for repair/replacement (est. 6-8 weeks turn-around), or b) use a little BLUE lock-tite on the bolts and have a local smith re-stake them (what he did). It has run flawless since.
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Old June 16th, 2015, 11:26 AM   #12
 
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Quote:
Originally Posted by Spike12 View Post
I have yet to see ANY gas key staked in the manner that I was taught as to what 'staking' was. A few years ago before I bought my first AR I looked at a bunch of different pictures of gas keys that were 'staked' and I left being scared to shoot any of them.

Proper staking to me is using a pointed punch to push a sample of the surrounding metal over into the fastener. That way if the fastener wants to turn it has to move that piece metal pushed into it out of the way. I learned that from working on airplane engines. I have yet to see that on an AR.

That being said, can anybody relate a story of a gas key coming off?
Quote:
Originally Posted by mishtub View Post
While not coming off, last fall a friend was shooting his DPMS .204 and the gas key staking was insufficient causing the bolts to loosen in the BCG. The loose key caused multiple failures to cycle properly (FTFeed's).
DPMS gave a couple options, a) send it in for repair/replacement (est. 6-8 weeks turn-around), or b) use a little BLUE lock-tite on the bolts and have a local smith re-stake them (what he did). It has run flawless since.
YES! To further my point, I haven't seen any gas keys staked in a manner that would PREVENT this from happening either.

IMHO: IF you can easily, with an obvious amount of effort, remove your gas key, then it wasn't properly staked.
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Old June 16th, 2015, 01:11 PM   #13
 
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Here, watch this YouTube on staking the castle nut. Notice once it's done you can't move the nut because there's metal in the way. Then look at the OP picture. My take is that the gas key screws could come right off regardless of the 'staking'.



My Stag 8 was staked as shown in the video. I don't think Ruger SR or ARs are.
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Old June 17th, 2015, 05:02 AM   #14
 
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Originally Posted by Spike12 View Post
IMHO: IF you can easily, with an obvious amount of effort, remove your gas key, then it wasn't properly staked.
Agreed.
My buddy had his key staked very similar to the picture in the OP. It loosened with less than 1000 rounds through it. He never burned through ammo fast enough to heat up the bolt either.
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Old June 17th, 2015, 07:32 AM   #15
 
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Agreed.
My buddy had his key staked very similar to the picture in the OP. It loosened with less than 1000 rounds through it. He never burned through ammo fast enough to heat up the bolt either.
Another PLUS for piston guns.
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