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1/23/2025 2:46:54 AM EDT
[Last Edit: urbankaos04][Edited]
I have been wanting to pick up a stripped SOCOM barrel for awhile and finally found one at a good price from a vendor that tends to always get Colt stuff. It was only $250. Other vendors were either out of stock or were more expensive.

In looking over the barrel, I noticed there is no date of manufacture, which is something I haven’t seen before. There is a also a nick on one of the locking lugs, which is not a biggy and better than having the dremel job Colt did on some rifles there for awhile. As long as the barrel shoots as well as other SOCOM barrels I have seen, it’s a non-issue, but it still irks me.

On another note, I'm looking at these gas blocks: Triarc Easy Pin GB, SLR Micro GB, or FCD GB .

Any thoughts on the above gas blocks? I'm kinda leaning toward the TRIARC GB. I'll probably go with Retro Arms Works to have him re-barrel the upper I'm gonna send, install whatever GB I decide to go with and do the pin and weld with a standard A2 FS and a spacer. Or is there someone else I should look at doing this?



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Change is the only constant. - Heractilus
1/23/2025 9:19:19 AM EDT
[#1]
Date stamps are no longer from what I've seen.

I'd touch that lug up with a jeweler's file.

I'm partial to the GB-7 from SA....but any on your list will work fine.
1/24/2025 8:33:54 PM EDT
[#2]
Quote History
Originally Posted By TGWLDR:
Date stamps are no longer from what I've seen.

I'd touch that lug up with a jeweler's file.

I'm partial to the GB-7 from SA....but any on your list will work fine.
View Quote


That sucks they stopped that practice. C’mon Colt, get it together! Lol.

I decided to go with the Triarc GB, and will be ordering it soon.
Change is the only constant. - Heractilus
1/29/2025 1:02:16 AM EDT
[Last Edit: urbankaos04][Edited] [#3]
Last question: What FF rail would you guys recommend for an upper using this barrel? I pretty much live in the past with two of my rifles using Centurion Arms C4 FF rails (clamp onto the standard barrel nut) and a DD Omega () that I use on my Reece-ish 16" build.

I have an out of production 12" EMR V3 MLOK that I was gonna use on that wanna-be Recce build, but now feel that the ALG would be better off on the SOCOM upper build.

I am out of the loop when it comes to the newest FF rails, so some constructive feedback would be appreciated.

I know Geiselle is the the current hotness, but I want something that isn't gonna be too heavy and not overly expensive. The only thing I will be attaching will be a flashlight. I don't live in a suppressor friendly state and don't have NODS, so I will not be mounting any IR laser units. I also don't want a rail longer than 12". These look like something I would consider, but they are shorter than what I am looking for: 10.5" Super Modular MK4 or this one 10" Super Modular Rail MK4 Federal

Just to give you an idea at what I was looking at: 11.5 " CMR MLOK 5.56 Rail for $227, but that is out of stock. Would be nice to see Centurion add steel inserts to the QD sling swivels locations at the rear of their rails a la Geiselle.

Pics of current high speed rails:

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Change is the only constant. - Heractilus
1/29/2025 1:46:05 AM EDT
[Last Edit: Frens][Edited] [#4]
Im a big Centurion fan… have been using their C4 quad rail since their introduction.
I’m still using a 12” C4 on rifle while on a carbine the 7 inch version  got replaced only by a 11” CMR.

The C4 mlok version was not available when I made the switch but that would be my choice today. Same 2 piece design very easy to install
1/29/2025 2:06:19 AM EDT
[#5]
Quote History
Originally Posted By Frens:
Im a big Centurion fan… have been using their C4 quad rail since their introduction.
I’m still using a 12” C4 on rifle while on a carbine the 7 inch version  got replaced only by a 11” CMR.

The C4 mlok version was not available when I made the switch but that would be my choice today. Same 2 piece design very easy to install
View Quote


Yeah, they are pretty good rails, I guess I am looking for something a little sleeker. And I didn't really think about the C4 MLOK version.
Change is the only constant. - Heractilus
1/29/2025 8:38:17 AM EDT
[#6]
Lot of options similar to the CMR.. I’d look at MI offering

Just for reference here’s my 11” CMR on a 16” barrel

1/29/2025 11:14:59 AM EDT
[#7]
Pic not showing up.
Change is the only constant. - Heractilus
1/29/2025 1:55:09 PM EDT
[#8]
Originally Posted By Frens:
Lot of options similar to the CMR.. I’d look at MI offering

Just for reference here’s my 11” CMR on a 16” barrel

https://i.postimg.cc/155hqzV6/IMG-3171.jpg
View Quote

Originally Posted By urbankaos04:
Pic not showing up.
View Quote

Show for me on this end.
Can't never could 'til try came along.

"All welchers should be removed from the EE".-Aimless

R.I.P. to the EE
1/29/2025 3:07:55 PM EDT
[Last Edit: urbankaos04][Edited] [#9]
Now it’s working for me.
Change is the only constant. - Heractilus
1/29/2025 3:10:06 PM EDT
[Last Edit: urbankaos04][Edited] [#10]
Quote History
Originally Posted By Frens:
Lot of options similar to the CMR.. I’d look at MI offering

Just for reference here’s my 11” CMR on a 16” barrel

https://i.postimg.cc/155hqzV6/IMG-3171.jpg
View Quote


That looks good. What gas block are you using under the CMR?
Change is the only constant. - Heractilus
1/29/2025 6:25:27 PM EDT
[#11]
Looks like a Rosco manufactured for Colt.  It should shoot straight and tight.
1/29/2025 6:26:51 PM EDT
[#12]
Quote History
Originally Posted By urbankaos04:


That looks good. What gas block are you using under the CMR?
View Quote


That barrel came with a standard FSB so I cut it down.. didn’t want to mess with different GB & set screws so I kept the original one with taper pins
2/2/2025 2:20:59 AM EDT
[#13]
Quote History
Originally Posted By Sinister:
Looks like a Rosco manufactured for Colt.  It should shoot straight and tight.
View Quote


That is what I am hoping.
Change is the only constant. - Heractilus
2/2/2025 2:21:26 AM EDT
[#14]
Quote History
Originally Posted By Frens:


That barrel came with a standard FSB so I cut it down.. didn’t want to mess with different GB & set screws so I kept the original one with taper pins
View Quote View All Quotes
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Quote History
Originally Posted By Frens:
Originally Posted By urbankaos04:


That looks good. What gas block are you using under the CMR?


That barrel came with a standard FSB so I cut it down.. didn’t want to mess with different GB & set screws so I kept the original one with taper pins


Doesn’t get any more secure than that.
Change is the only constant. - Heractilus
2/25/2025 6:45:04 PM EDT
[Last Edit: urbankaos04][Edited] [#15]
Quick question for you giys:

Originally, I setlled on just using a standard Colt A2 FS  which would P/W’d by Retro Arms with a spacer. However, after looking at the AAC Blackout on my Noveske, I changed my mind. Unfortunately, AAC no longer makes this beautiful and effective FS in the non-suppressor mount version (I emailed them and they stated having no plans on making this version again).

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Other than the Vortex, what other effective 3, or 4, prong FS are there. **And preferably something a little shorter than a Vortex/Blackout, if that is even available.**

If there is nothing close to this, Ill just go ahead and use the A2. Unless someone has an AAC they would like to sell me? Lol.
Change is the only constant. - Heractilus
2/25/2025 7:29:13 PM EDT
[#16]
Not sure if this meets your length requirements but I like the JPFH-556L.

https://www.jprifles.com/buy.php?item=JPFH-556L
2/25/2025 8:09:17 PM EDT
[#18]
Quote History
Originally Posted By H2K:
Not sure if this meets your length requirements but I like the JPFH-556L.

https://www.jprifles.com/buy.php?item=JPFH-556L
View Quote


A little longer than what I was looking for, but thank you for the suggestion.
Change is the only constant. - Heractilus
2/25/2025 8:10:18 PM EDT
[Last Edit: urbankaos04][Edited] [#19]
Quote History
Originally Posted By ark-and-spark:
That blackout flash hider you like is on gunbroker.

Here
View Quote



Thanks for the link. I got everything situated. Initially, the link wasnt working, but I got everything squared away.
Change is the only constant. - Heractilus
3/4/2025 1:38:37 PM EDT
[Last Edit: urbankaos04][Edited] [#20]
Ended up scoring the AAC Blackout FS! The seller has a lot of these and will be putting up more for auction. I scored mine for $55!! Smoking deal.

So far I have the following for this upper build:

Colt upper receiver
Colt gas tube
Triarc Easy Pin low profile gas block

I also bought a Colt A2 FS (and crush washer), as I initially wanted to keep this as short as possible, but now that I was able to secure the AAC Blackout, I’m leaning toward going with the AAC.

I also purchased a Colt barrel nut, as I was just gonna slap on a Centurion Arms C4 rail, but may just use the ALG 12” FF tube I have that I bought baaaack in the day. I was gonna use this on my wanna-be Recce/DMR rifle pictured below, but now I’m thinking about using it for this build.

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What do you guys think? Use A2 with spacer or use the AAC Blackout? Go with C4 HG or ALG tube?

Change is the only constant. - Heractilus
3/4/2025 2:13:08 PM EDT
[Last Edit: Frens][Edited] [#21]
Blackout & C4

Not a huge fan of the Alg style barrel nut.
3/4/2025 2:30:46 PM EDT
[Last Edit: urbankaos04][Edited] [#22]
Quote History
Originally Posted By Frens:
Blackout & C4

Not a huge fan of the Alg style barrel nut.
View Quote


@Frens

Can you please expand a little more on why the barrel nut is up to your liking?

One last question: What HG other than the C4
would you use? Maybe the CMR M-Lok? Basically, if you were going to skip using the USGI barrel but, what would be a decent FF rail that is not uber expensive and in-line with C4/CMR cost-wise? I don’t have NODS and will only be mounting a light.
Change is the only constant. - Heractilus
3/4/2025 3:57:45 PM EDT
[Last Edit: Frens][Edited] [#23]
I have no experience with the ALG but I used to have a PWS rail with similar attachment system.

That kind of barrel nuts still require timing and I don’t like the idea of a bunch of screw securing the HG that could come loose. I’m a weirdo I know…

I still own a CMR (no timing for the barrel nuts& held just by 2 screws) and a C4 quad rail.

Years ago Centurion also released a stream lined version of the C4 that is extremely nice. But still use the USGi barrel nut.

MI is another good source for FF rail.. their design has beed improved significantly compared to the early models. Price is usually good too
3/4/2025 5:51:11 PM EDT
[Last Edit: urbankaos04][Edited] [#24]
Thank you for your response, Frens.

I looked up the ALG installation video and it didn’t look too bad, but I get what you are saying about having to time the barrel nut and the questionable small screws that holds the tube onto the barrel nut.

ALG DEFENSE - ERGONOMIC MODULAR RAILS - PRODUCT INSTALLATION VIDEO


The CMR clamp system does seem to be the
more robust of the two set-up.

Change is the only constant. - Heractilus
3/7/2025 8:22:38 PM EDT
[#25]
For something a little more modern I’d go Geissele. They make fantastic handguards. The length is a little longer at 13.5” but looks very proportional to a 14.5” barrel.

Here are some examples

MK8, this one is the older 13”, current production is 13.5”



MK16 13.5”


3/11/2025 9:07:58 PM EDT
[#26]
@HD2006

Yeah, those "G" rails look pretty nice. How are they weight wise in comparison to other similar rails?
Change is the only constant. - Heractilus
3/12/2025 8:29:30 AM EDT
[#27]
Quote History
Originally Posted By urbankaos04:


If there is nothing close to this, Ill just go ahead and use the A2. Unless someone has an AAC they would like to sell me? Lol.
View Quote


@urbankaos04


EE LINK
"All welchers should be removed from the EE".-Aimless
3/12/2025 12:40:15 PM EDT
[#28]
Quote History
Originally Posted By TGWLDR:


@urbankaos04


EE LINK
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By TGWLDR:
Originally Posted By urbankaos04:


If there is nothing close to this, Ill just go ahead and use the A2. Unless someone has an AAC they would like to sell me? Lol.


@urbankaos04


EE LINK


Thanks for that link, brother, but I already scored two from the guy in the Gun Broker link! He still has a bunch on-hand to sell.

If you guys are interested, and it is permitted, I can post up his email. He is selling them at $50 a pop if you reach out to him directly.

I don’t know the guy and I am not affiliated with him in any way. I just want to pass along a good deal on a great product.

Change is the only constant. - Heractilus
3/12/2025 12:58:27 PM EDT
[#29]
Quote History
Originally Posted By urbankaos04:


Thanks for that link, brother, but I already scored two from the guy in the Gun Broker link! He still has a bunch on-hand to sell.

If you guys are interested, and it is permitted, I can post up his email. He is selling them at $50 a pop if you reach out to him directly.

I don’t know the guy and I am not affiliated with him in any way. I just want to pass along a good deal on a great product.

View Quote

Missed the mention above, my bad.
"All welchers should be removed from the EE".-Aimless
3/19/2025 12:38:57 PM EDT
[#30]
No problem, Tig.

Here are some pics of the AAC Blackouts I scored.

Not bad for $50 a pop. The seller has a bunch more, if you guys are interested.

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Change is the only constant. - Heractilus

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