ADCO would not tell me what they were opening it up to. I thought this was odd as all I have to do is measure and report my findings (if it were some super industry secret). I did tell them I did not want the full on .080" DD experience. I asked them to do what they thought was best for someone who was going to shoot just about everything except the most extreme cases of weak, steel cased ammo. I'm guessing .073"-.0.77" (but what do I know?).


 

Anyone measure the noveske barrels and find the gas port size?

Those XPS's just look "right" on those.

I'm always jealous of your mk18 and cqbr. I don't know why because I have nearly identical ones.

I find it odd that this info isn't on the spec sheet for every rifle, barrel and upper that's sold and the fact that ADCO and Rainier don't disclose, even to the customer paying them, this info is very puzzling.

anyone ever ask them why they won't tell you?


edit: i'll head to their industry page and ask.

Let us know what you find out.






 

What's the difference between the two? Is one rarer/harder to find than the other?

Like a lot of clone stuff...the 4P is less effective - yet people want to spend more for it.

The 215A (pictured) is for use with legacy suppressors and the newer FH556RC (SF4P) is for the new SOCOM cans. Also, the 215A is/was always available to civilians whereas the SF4P was made for SOCOM only.

My understanding is that Surefire gave some SF4P's to industry friends and  many were subsequently sold.

This should be approved next month. Going to have matching CQBR's but one will be .300blk

The FH556-RC, slightly different, this one is more offset in it's tines vs the -215A.

3rd SFG with Colombian Air Force:

Beat me to it, was about to post these myself.

I was a little surprised they hadn't been posted yet.  

they'd have been up quicker if they were sporting beards and woodland camo

Awesome.  One day I will get a registered full auto lower, or maybe a RDIAS.

Yeah no doubt.

That third pin looks engraved and not real. Is it?

That is a SPUD lower.

 

Well, it has NoDakSpud's manufacturer info, so I'm gonna go with engraved and not real for $200, Trebek.  

Correct it is just an engraved lower

I know I'm late to respond and my opinion probably doesn't mean much, but having the correct parts is important, color and finish should be personal preference. Just my $.02. I didn't cerakote this build, but I did Cerakote the furniture on my phased replacement and it rocks. I also think Seaslug's rig is one of the most visually appealing builds in both threads

The first time I saw Seaslug's CQBR, I was overwhelmed with some very unnatural thoughts and feelings.

It's the very reason why I cerakoted one of my CQBRs patriot brown.

Yup! They did a fantastic job with that barrel cut and the threads start EXACTLY where they should. And this is why the 10.5 barrels looks so wrong and are easy to spot.

Very nice setup. I'm convinced the cut down Colt barrels are the absolute best to use. The DD barrels are over gassed. The stock Colt barrels are overly expensive. A cut down 6920 barrel is so sweet, you can set the gas port to exactly what you want it at AND it's a fairly cheap option.

I continue to find it interesting that the previous MK18 thread lasted for nearly 500 pages, and gas port sizes were very rarely, if ever, even a conversation.

Now, during the current short life of this recent MK18 thread, gas port sizes are all of a sudden the primary topic of conversation.

And some of the points that continue to be mentioned are far more of a give and take than most make them out to be.

You say cut down Colt barrels "are the absolute best to use." That's more than fine. To each their own.

These recent DD gas port size conversations that next to never mattered before have more than been blown out of proportion in the grand scheme of things IMO.

Fact is, a chopped down 6920 barrel is still ultimately more expensive than a factory drilled DD barrel. And you still are somewhat rolling the dice having shopwork like that done.

And back to the DD gas port, I find it damn near hilarious that a barrel that's for sure going to reliably cycle any ammo in any environment is a negative.

And this entire overgassed recoil thing amuses me as well. I own two complete factory DD CQBRs currently, and have owned two other DD CQBR uppers as well. None of them are noticeably snappy or gassy - and all I have fed them is M855.

I own and have fired a plethora of different 556 SBRs of a large variety of different barrel lengths from a vast amount of different manufacturers. There's nothing that has any way stood out to me making 10.3" DDs noticeably snappier than any of the others.

Beyond that, like most setups, the ideal buffer weight is always important as well.

And ultimately, believe what you want, but overall, I have absolutely zero doubt that a 10.3" DD barrel is more accurate than any chopped down 10.3" Colt barrel. Beyond that, think what you want about CHF as well, but it's not some fairy tale. The DD barrel will take more abuse and sustain a higher round count.

Once again, to each their own, but I just find it very interesting that people have all of a sudden decided to ignore multiple advantages of one barrel just because of a gas port size that can also be considered an advantage to some.

Mind you, I'm honestly all for people going Colt for clone purposes. Despite what some may think, I see that as a great reason to go Colt.

I just feel that some are kidding themselves overall when they act like there's some or any grand advantage to a chopped down Colt barrel for anything other than clone cred.

It's just like those who try to act like an Elcan is an RDS.

I think it's the OCD for wanting to have what they have. If there was IMO more concrete proof that DD CHF 10.3" barrels (exact same as DD sells to the pubic) were the same as those used on .mil CQBRs, we'd use those over Colt in a heartbeat. I don't see anything wrong with trying to have the same thing "they" have, as that's the point of Clone builds.

I understand this is a clone thread.  But it shouldn't be rigid in its specs,  if it passes the eye test it should be good

Where is this AR? I want those feels too...

I went to that newfangled google place, typed "seaslug cqbr" and whattayaknow...

Link

I think Geno's All black is pretty damn good looking too:

Niiiiice

So I mocked up an ACOG on the DD MK18. I am seriously considering this over the SU-231.

Elcan has Chinese writing on it?

IT DOES? more pics here:

http://www.ar15.com/forums/t_7_148/1304969_Insight_M3X_1913_Long_Gun_Black__M3X_Dual_Pressure_Switch__Black___PRICES_LOWERED____.html

Camera just didn't catch the white writing very well.

We might have a bit of a problem on our hands ladies and gentlemen.

I just got off the phone with Daniel Defense, after checking all the distributors at my dispoal for RIS II Rails, and the lady told me that she could not give me a realistic timeline as to when the rails or anything RIS II related would start to come around again. I asked her if they were going to continue making producing them for the civilian sector and if she expected them to ever come back and she said that she thinks so but is not sure.

As for a reason the reason behind them all being gone, you guessed it, MIL is taking them all. Looks like we are in for a storm. I'm glad I have at least one of each already.

This isn't news; it's been common knowledge for months:

http://www.ar15.com/forums/t_2_382/245356_.html

Posted Via AR15.Com Mobile

Yeah, old news. And my understanding of it was that they would continue to make the Mk18 and M4A1 rifles, correct? So the only way to get an RIS II of any flavor is on a rifle.

Correct. From "iceman" in DD industry forum:

As for RIS II, black models are available for sale. As it stands now FDE variants are not available for individual sales. We are currently delivering on a very large order under contract. This policy may change in the future, but for right now due to quantities and contractual obligations to our warfighters we are only able to release quantities sufficient for uppers and rifles.

And 10 seconds into a Google search for "Daniel Defense Mk18" found this:

http://www.midwayusa.com/product/464559/daniel-defense-ar-15-pistol-mk18-a3-flat-top-upper-assembly-556x45mm-nato-1-in-7-twist-103-government-barrel-chrome-lined-cm-with-mk18-ris-ii-quad-rail-free-float-handguard-flash-hider

Still in stock at the time of posting....

You can still build a mk18 upper on their website for purchase as well.
 

The lady told me that no rails of any kind were around to be had. Nor was anything else.

there are a few in EE once in awhile. better get them before the hoarders get them.

Great, now you've made me want to build a black CQBR.

Black CQBRs are badass.

That's why I had to do one black and one FDE.

I have everything for my build except for the barrel and gas block. I have seen many threads about DD barrels being over gassed.  Has anyone here had any issues with their DD MK 18 barrels? I was going to just buy the DD barrel and mk12 gas block. But if it's over gassed I guess I will have to look for another option...

There's plenty of DD MK18 owners out there that report no excessive recoil and have shot countless numbers of rounds without excessive wear and tear on their guns. I think the gas port thing is being a little nitpicky but if you want a tight gas port then yes, look elsewhere. I believe MilSpec is .070

While I've never shot SBR's (not counting the various M4's I had while in the Army), but the recoil on my DD upper is very flat and controllable. From what I had read about short barrels, it sounded like they had a good kick. Even with a pistol tube on mine, it doesn't feel any different than really any other carbine barrel I've shot.

Pretty much. I don't understand why people report their SBR's kick so hard. Before MI lifted the ban on SBR's and I finally got one, I've shot countless AR pistols. From little 7.5" up to 11.5" and everything in between there was never really any more recoil than the larger carbines in the same caliber.

I have a video on my phone of me shooting a 7.5" AR pistol that has a "pistol length" gas system. Doesn't jump or buck at all. The gun stays flat as brass flies out of the ejection port

Thanks guys. DD barrel ordered. My build will be all Colt with the exception of the DD barrel.

the discussion is over the difference between a spec .070 port and DD .080 port, and someone who has or shot both saying it was noticeable. Nobody ever said they "kick so hard", I have 2 SBRs and 3 different uppers(LMT 12" piston, 416(sold it) and 10.3 DD), all 3 have had noticeably different recoil impulse with the same spring/buffer. It's just a conversation. take it for what it is. I feel that the DD barrel is great for everything, but if you plan on feeding it a steady diet of 855 through a suppressor a smaller port might be more suitable, or do what I and others do and throw a +10% spring and H2 or H3 buffer in it. I like tweaking on my guns to see what different things will do, all in a effort to get it to perform the way I want.

I believe we just had an exhibit A of, and a victim of, the Dave Royer Internet Rule on this thread on this page.












 

I did this ^. Cost was of no concern. DD barrel exceeded expectations; you won't regret it.