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Posted: 7/9/2017 9:15:42 PM EDT
I'd be interested in this information. Still waiting on my form 4. I can hope for a retro-fit with an MK12 gas block.
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Posted: 7/9/2017 9:26:15 PM EDT
If it's true I'll be filing a form 4 by the end of the week.
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Posted: 7/23/2017 10:11:11 PM EDT
Anyone know where to find a Mk18 URG with the properly spec'd .072 GAS PORT?
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Posted: 7/23/2017 10:44:43 PM EDT
I am still waiting on an official response, but the word on the street is if you buy one with the old gas Port they will replace the barrel free of charge.
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Posted: 7/24/2017 1:13:55 AM EDT
Please update when you hear back.
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Posted: 7/25/2017 6:58:17 PM EDT
Quote History Quoted:
I am still waiting on an official response, but the word on the street is if you buy one with the old gas Port they will replace the barrel free of charge. However, even though it's gassy, I've never had an issue with my MK18, and i shoot it suppressed half the time. |
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Posted: 7/26/2017 12:47:33 AM EDT
Quote History Quoted:
Would love to hear more about this. Would thus apply to a complete MK18 upper, or entire SBR only? However, even though it's gassy, I've never had an issue with my MK18, and i shoot it suppressed half the time. |
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Posted: 7/26/2017 2:13:25 AM EDT
Quote History Quoted:
Anyone know where to find a Mk18 URG with the properly spec'd .072 GAS PORT? |
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Posted: 8/4/2017 1:04:39 PM EDT
^^^^ this.
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Posted: 8/17/2017 9:13:29 PM EDT
FYI I received 3 10.3 barrels from DD yesterday, ports .070 on all 3.
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Posted: 8/18/2017 10:20:00 AM EDT
Quote History Quoted:
FYI I received 3 10.3 barrels from DD yesterday, ports .070 on all 3. |
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Posted: 8/20/2017 2:13:25 PM EDT
Quote History Quoted:
FYI I received 3 10.3 barrels from DD yesterday, ports .070 on all 3. |
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Posted: 8/22/2017 8:14:01 AM EDT
Curious as well. On how to know what I'm gettting. I'm wanting a Mod 1 upper and would prefer proper gas port size.
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Posted: 8/24/2017 8:01:56 PM EDT
Gonna write DD an email to see if there is a way to verify which gas port one would have. Maybe there is a date or timeframe to go by.
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Posted: 8/26/2017 1:21:29 AM EDT
Quote History Quoted:
Gonna write DD an email to see if there is a way to verify which gas port one would have. Maybe there is a date or timeframe to go by. |
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Posted: 8/26/2017 8:02:37 AM EDT
Quote History Quoted:
Looks like the gas port was changed to 0.070" at the end of this June. |
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Posted: 8/26/2017 8:47:24 AM EDT
I've had an MK18 for 3 years.
Never a FTF or FTE with tons of use. Whats the the issue with the gas port size? |
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Posted: 8/26/2017 10:30:17 AM EDT
To large causing excess gas to the face when suppressed.
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Posted: 8/26/2017 10:49:41 AM EDT
Quote History Quoted:
To large causing excess gas to the face when suppressed. |
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Posted: 8/26/2017 7:58:24 PM EDT
Anybody know of the stripped uppers through brownells where all smaller gas port?
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Posted: 8/27/2017 9:19:34 PM EDT
This thread could use a response from joe marler
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Posted: 9/1/2017 8:23:59 PM EDT
This is the email I also got back from them a while back. As always, stellar customer service from Daniel Defense.
Cheers "Thank you for contacting Daniel Defense. We have made an inline change to the gas port diameter on all 5.56 10.3 barrels manufactured. This change was effective on all barrels manufactured after June 2017. As always, all of our products are backed by our Lifetime Warranty. If you are having any malfunctions or failures, we will be happy to get the product back in house free of charge for an evaluation then make the necessary repairs to get the product running as it should. Thank you, again, for contacting us and if you have any questions please let me know." |
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Posted: 9/3/2017 2:06:50 PM EDT
Nice to know that they changed it, since so many people considered it a major flaw of an otherwise awesome upper/rifle. I can honestly say that shooting mine built in 2015 with a suppressor I have never found it to be a problem.
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Posted: 1/28/2018 1:19:15 PM EDT
So, I bought mine in August 2017 but it has an inspection tag from March 2017.
This means it doesn’t have the .070 port? I saw posts in the Mk18 thread from back in May from a guy that said his was .070 when he checked it??? |
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Posted: 1/28/2018 8:01:46 PM EDT
How I have managed to shoot so much with the larger gas port I will never know.
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Posted: 1/28/2018 8:11:58 PM EDT
Quote History Quoted:
How I have managed to shoot so much with the larger gas port I will never know. 
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Posted: 1/29/2018 11:46:33 AM EDT
I just spoke to Daniel Defense and the guy there said, as far as he knows, all of the Socom barrels have a .071 gas port no matter when manufactured.
He reminded me they have a 100% lifetime guarantee, so if there are ever any issues with it I don’t need to worry. |
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Posted: 1/29/2018 3:53:27 PM EDT
Quote History Quoted:
How I have managed to shoot so much with the larger gas port I will never know. |
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Posted: 1/29/2018 5:40:45 PM EDT
Quote History Quoted: This. I have no plans to send mine in unless I start having issues. Now I’m confused...guess it’s time to give up and just shoot it. 
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Posted: 2/5/2018 12:18:39 AM EDT
From what I have seen, the barrels after August of 2017 are at 0.070". It could be, like said, that the date is June. I can just verify that from August forward, all is good. Prior to "Summer" of 2017, the gas port was much larger, and posed some issues for some people.
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Posted: 2/26/2018 8:31:58 PM EDT
I have two barrels from 2013. Would be nice to get some of the gas to face cut down with properly sized gas ports.
 What's the best way to measure the gas ports?
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Posted: 2/27/2018 6:05:48 AM EDT
Pin gages, but calipers will work just fine.
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Posted: 3/22/2018 8:00:23 AM EDT
Quote History Quoted:
I have two barrels from 2013. Would be nice to get some of the gas to face cut down with properly sized gas ports. What's the best way to measure the gas ports? |
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Posted: 3/22/2018 10:34:57 AM EDT
Quote History Quoted:
I have two barrels from 2013. Would be nice to get some of the gas to face cut down with properly sized gas ports. What's the best way to measure the gas ports?As to how to address the issue of an over-sized gas port, you need to first assess if it really matters. Are you having problems? If not, fogetaboutit. If you are, then you can buy new barrels for $250 to $290 each, or have the gas port plugged and re-drilled, probably at 90 degrees off center, give or take. This means that your barrel extension needs to be removed and a new one installed, headspaced and pinned. For only two barrels, that will likely cost you around $150 per barrel, give or take $40. I have a good source for that, if you want to go that route. If you go that route, really depends upon budget and how new the barrels are. You can always call DD and ask them to replace. Not sure what they would say. I imagine if you can show issues, they would be more sympathetic. |
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