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[ARCHIVED THREAD] - Green Mountain barrels

Posted: 11/28/2018 9:00:28 PM EDT

I'm looking to build a 20in government profile. Has anyone ever had experience with Green Mountain barrels? Specifically, the head spacing. I know every new build needs to be checked for headspace first, but I was curious about the barrels from this vendor.

Posted: 11/28/2018 10:07:27 PM EDT

[#1]

Green Maintain is GTG. They make button and CHF barrels for many manufacturers. Two of my Colt 6920 barrels were built by GM per Colt specs. As far as I know they are of the majority barrels suppliers to Colt.

Posted: 11/28/2018 10:25:22 PM EDT

[#2]

Experience with a sample of one, great shooter. I wish that I would have kept it.

Posted: 11/28/2018 11:39:50 PM EDT

[#3]

I can say that my GM 10/22 barrel was excellent. I sold the rifle but miss the bartel.

Posted: 11/29/2018 1:19:42 AM EDT

[#4]

I have used several thousand Green mountain blanks in the past few years......consistent and high quality.......I have the reamers and machines to make any barrel I want......last couple of 5.56 guns I built....I just bought 16 inch mid length GM barrels......mounted them in an upper....chambered and ejected a live round to make sure they weren't short chambered (which the weren''t

) and shot them.....inspected brass for signs of pressure and enjoyed them......buy and shoot with confidence.

Posted: 11/29/2018 6:01:23 AM EDT

[#5]

Great barrels, great price....

Posted: 11/29/2018 6:40:52 AM EDT

[#6]

My Windham Weaponry upper has one in it and it shoots great!

Posted: 11/29/2018 7:00:02 AM EDT

[#7]

Green Mountain is excellent

Posted: 11/29/2018 9:02:21 AM EDT

[#8]

Thanks for the info guys. To be honest, I have three ARs and have built the lowers with no problems. But I have always put pre-assembled uppers on them so there was no fun at that. Wanted to try my hand at building the upper. That's why I was wondering about the barrels and headspacing.

Posted: 11/29/2018 9:24:17 AM EDT

[#9]

Gtg, made about 1 hour from me. Owner is a member and an industry partner here.

Posted: 11/29/2018 9:42:59 AM EDT

[#10]

I've used several. Great value barrel for the money.

Posted: 11/29/2018 9:53:13 AM EDT

[#11]

They are great barrels.

Posted: 11/29/2018 12:00:00 PM EDT

[#12]

I've been running a few GM barrels.
18" stainless since 2013ish.
They are great barrels.
I have 2 GM18s and 1 GM M8.
2 more GM M8 barrels enroute via black friday spending.
Love em.
The GM M8 is wonderful.
16" chrome lined. Shoots little bug hole groups.
Mid length medium profile.

Posted: 11/29/2018 5:01:57 PM EDT

[#13]

GTG company and their barrels. I’ve been shooting a GM-M8 16" Mid Length gas system 5.56 mm for a few years now. And it’s way better then I can shoot!

Posted: 11/30/2018 6:22:07 PM EDT

[#14]

Quote History

Quoted:
Green Maintain is GTG. They make button and CHF barrels for many manufacturers. Two of my Colt 6920 barrels were built by GM per Colt specs. As far as I know they are of the majority barrels suppliers to Colt.

View Quote

Link to Green Mountain CHF barrels please?

Posted: 12/1/2018 1:12:49 AM EDT

[#15]

I've got three of the GM barrels all the same 18" stainless steel, .223 Wylde, rifle length gas. Difference is the twist. 1:14, 1:6 and 1:5. Never any issues and great shooting barrels. Wife's varmint rifle uses the 1:14 is a tack driver. Still working with the faster twist and heavy bullets but need a longer range to really good data.

CD

Posted: 12/1/2018 10:02:06 AM EDT

[#16]

Quote History

Quoted:
Link to Green Mountain CHF barrels please?

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Ain't none.

All Green Mountain barrels are button rifled, but there ain't no shame in that.

Posted: 12/1/2018 10:02:37 AM EDT

[#17]

double

Posted: 12/1/2018 10:25:16 AM EDT

[#18]

I have two a 16" and a 20" both are super accurate and I love em.

Posted: 12/2/2018 4:37:50 PM EDT

[#19]

Quote History

Quoted:
Ain't none.

All Green Mountain barrels are button rifled, but there ain't no shame in that.

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Quote History

Quoted:

Quoted:
Link to Green Mountain CHF barrels please?

Ain't none.

All Green Mountain barrels are button rifled, but there ain't no shame in that.

Yea I know. And I have no problem with Green Mountain. I was just asking for somebody to produce a link that isn't produceable. Maybe he posted as an accident?

Posted: 12/4/2018 8:53:08 PM EDT

[#20]

Quote History

Quoted:
Gtg, made about 1 hour from me. Owner is a member and an industry partner here.

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Same here :) i'd like to go check out their setup

Posted: 12/6/2018 4:49:28 PM EDT

[#21]

I have a GMB, 16". no issues

Posted: 12/6/2018 4:58:36 PM EDT

[#22]

Quote History

Quoted:
Yea I know. And I have no problem with Green Mountain. I was just asking for somebody to produce a link that isn't produceable. Maybe he posted as an accident?

View Quote

I went there a few years ago and got a tour of the place. There wasn't a CHF there.

There was a local major mfg who reportedly used them and went to CHF bbls, so maybe that's where his confusion came from. That mfg bought their own CHF machine.

The owner or ceo of GMRBC is actually a member here, but I'm blanking on his screen name.

Posted: 12/6/2018 4:59:50 PM EDT

[#23]

Quote History

Quoted:
Yea I know. And I have no problem with Green Mountain. I was just asking for somebody to produce a link that isn't produceable. Maybe he posted as an accident?

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Quote History

Quoted:

Quoted:
Link to Green Mountain CHF barrels please?

Ain't none.

All Green Mountain barrels are button rifled, but there ain't no shame in that.

Yea I know. And I have no problem with Green Mountain. I was just asking for somebody to produce a link that isn't produceable. Maybe he posted as an accident?

Or he mistook chrome lined for cold hammer forged.

Posted: 12/10/2018 11:03:06 AM EDT

[#24]

Took out my newest GM-M8 barrel/build yesterday for it maiden voyage.
After about 40 rounds of break in, shot this group at 100 yards.

Not too bad for a 16" chrome lined 5.56 chambered barrel!!!
Load was a 68gr hornady BTHP over 23.1gr 8208 @ 2.250" OAL.

Posted: 12/10/2018 11:38:25 AM EDT

[#25]

Quote History

Quoted:
Or he mistook chrome lined for cold hammer forged.

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Quote History

Quoted:

Quoted:
Link to Green Mountain CHF barrels please?

Ain't none.

All Green Mountain barrels are button rifled, but there ain't no shame in that.

Yea I know. And I have no problem with Green Mountain. I was just asking for somebody to produce a link that isn't produceable. Maybe he posted as an accident?

Or he mistook chrome lined for cold hammer forged.

Likely this.

Many assume that any .mil barrel is both CHF/CLd. Not so.

Posted: 12/13/2018 7:24:39 PM EDT

[#26]

Quote History

Quoted:
GTG company and their barrels. I’ve been shooting a GM-M8 16" Mid Length gas system 5.56 mm for a few years now. And it’s way better then I can shoot!

View Quote

If I could have only one AR for everything...accuracy, durability, defense of life and liberty...it would have this exact barrel.

They are that good.

Posted: 12/14/2018 11:58:47 AM EDT

[#27]

I've used three Green Mountain barrels.

All were excellent quality. Accurate, too.

The finned barrel was most accurate. A bit heavy, but a really great barrel.

Posted: 12/14/2018 12:28:38 PM EDT

[#28]

Quote History

Quoted:
Gtg, made about 1 hour from me. Owner is a member and an industry partner here.

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I pop into the store every time I’m out that way. Have come home with some great deals.

Posted: 12/14/2018 12:40:45 PM EDT

[#29]

Never heard anything bad about them. Always positive.

I have one of their experimental barrels. 16" M4 profile 1/6 twist.

Posted: 12/14/2018 3:41:02 PM EDT

[#30]

Quote History

Quoted:
Never heard anything bad about them. Always positive.

I have one of their experimental barrels. 16" M4 profile 1/6 twist.

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The worse thing I have heard about them, and can attest to, is that they won't fix their .300blk barrels to not have an outdated FS pin hole and they won't add a shoulder for the gas block to but against. Other than that it's always that they don't make a 6.5G or AR10/308 barrels.

Posted: 12/14/2018 3:41:14 PM EDT

[#31]

Is that 1-6 twist accurate?

Posted: 12/14/2018 3:46:04 PM EDT

[#32]

Quote History

Quoted:
Is that 1-6 twist accurate?

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According to the thread they were okay, but nothing to write home about. Realistically a 1:6 is way too fast for any factory ammo

Posted: 12/22/2018 1:36:01 AM EDT

[#33]

Sionics sources their barrels from Green Mountain, however they go a step further and Xray them in-house before selling them. That being said, nothing but excellent things about Sionics' barrels, so that should tell you something.