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Thread: Need to stake AR gas key
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March 12th, 2021, 06:37 PM #1
Need to stake AR gas key
I have replaced the original gas key with an adjustable gas key from Rubber City Armory. I have torqued the new mounting bolts to 57 inch pounds. Now all I need to do is take 10 minutes or less to stake the bolts in place. I do not want to use a chisel to do this. I want to use a purpose made tool like the ones offered by Brownells or Michiguns. The thing is I think this will be a one time use tool and I don't want to spend the money to buy one.
I'm hoping there's some kind person in the Lehigh Valley region who has one of these tools that wouldn't mind letting me come over and spend 10 minutes using his tool.
Here are some pics showing the removal of the original gas key and images of the two tools I mentioned above.
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March 13th, 2021, 05:37 PM #2Super Member
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Re: Need to stake AR gas key
What is wrong with a chisel that has a small flat ground on it? We replaced hundreds of gas keys(Maybe thousands) when I was in the military and unbelievably some smart company did not sucker Uncle Sam into buying tools like that.
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March 13th, 2021, 06:10 PM #3
Re: Need to stake AR gas key
Probably nothing except I have no experience staking gas keys and these things looked fool proof. Recommend the correct chisel and the size of the flat and I'll do it your way.
All I did during my time was carry, shoot, and clean the rifle. If an armorer had seen me with a chisel in my hand, he would have either fainted or smacked me upside my head.
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March 13th, 2021, 11:04 PM #4Grand Member
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OUT TO LUNCH
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Re: Need to stake AR gas key
Not that it matters, but why did you take off the stock key in the first place?
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March 13th, 2021, 11:07 PM #5
Re: Need to stake AR gas key
My feedback thread: https://forum.pafoa.org/showthread.php?t=315316
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March 13th, 2021, 11:55 PM #6
Re: Need to stake AR gas key
Just use a center punch from the side toward the heads of the capscrews, like this:
A vise with padded jaws may help to hold the bolt carrier. A 6 to 8 oz metal hammer is plenty massive enough, but if all you have is a 16 oz framing hammer, that'll work, too.
IMO, those special tools are costly solutions to non-problems.
NoahWisdom and knowledge shall be the stability of thy times.
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March 14th, 2021, 12:24 AM #7
Re: Need to stake AR gas key
I never understood this obsession with gas keys lately.
I've got AR's with easily near 5-10k rounds through it and I never even considering doing anything to the gas key.
Even my high end BCM or LMT upppers have regular mil spec BCG's in them.
Maybe I'm missing something.."One must be a fox to recognize traps, and a lion to frighten wolves” ~ Machiavelli
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March 14th, 2021, 07:11 AM #8Grand Member
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Re: Need to stake AR gas key
They get staked in place because the bolt heat cycles.
Private Snuffy listens to the military folk lore and over lubricates the bolt assembly, then goes to the range and fires a basic load (210 rnds) in about 5 minutes.
The bolt, carrier and related parts then heat cycle- AR's/M16's basically vomit into their own mouths to operate.
That's why carrier keys get staked. I use a staking punch. The dedicated tool leaves nice, pretty looking marks but the punch does the same thing if applied by an experienced hand.Crusader's local #556 South Central Asia chapter
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March 14th, 2021, 07:51 AM #9
Re: Need to stake AR gas key
spring loaded center punch
Derrion Albert was my Hero.
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March 14th, 2021, 11:03 AM #10
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