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Posted: 3/11/2020 5:20:38 PM EDT
So how are the new nitrided non FN/chrome-lined barrels holding up?  Is everyone satisfied with the switch?  Anyone run one hard?  Just wondering as I'm contemplating giving one a shot.
Link Posted: 3/12/2020 6:24:31 AM EDT
Was thinking of asking the same question.
Many AR barrel manufacturers are using nitride vs chrome, with phenomenal results.
In the the info
Link Posted: 3/12/2020 9:32:30 AM EDT
Happy with the accuracy but I honestly can’t comment on anything else as I haven’t done enough abuse yet.
Link Posted: 3/12/2020 10:54:48 AM EDT
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Originally Posted By Leonitus:
Many AR barrel manufacturers are using nitride vs chrome, with phenomenal results.
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I haven't seen any test results I'd consider phenomenal.

Assuming both are properly applied, chrome-lining is superior to nitride. The main difference is how it protects a barrel as the temperature increases.

The only comparative results which indicate nitride to be "just as good" are when the barrel doesn't get hot. Then it could theoretically last just as long as a chrome-lined barrel...
except barrels do get hot. The more rounds you fire, the hotter they get.

Companies didn't start switching to nitride instead of chrome because of better performance... They use nitride to decrease production costs.
The only thing cheaper is to not protect the barrel at all.

OP maybe didn't want a thread about chrome vs nitride though... ?

I am interested in results/info also.
It's rare that reviewers fire a few thousand rounds and then take photos through a good bore scope. I wish more would do so, but that's asking a lot.
Link Posted: 3/12/2020 11:15:52 AM EDT
Don't have one - but I will say I'm not very impressed with the chrome lined FN AUG BBL  - at all.   My experiences with malonited AR barrels has been quite good, and given the choice, I'll take malonited over chrome-lined for anything short of sustained full-auto fire.
Link Posted: 3/12/2020 1:09:53 PM EDT
[Last Edit: 3/12/2020 2:56:26 PM EDT by KitBuilder]
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Originally Posted By lazyengineer:
Don't have one - but I will say I'm not very impressed with the chrome lined FN AUG BBL  - at all.
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I haven't fired enough rounds through mine to know, but it seems clear from other posts in this forum that FN was not applying the chrome correctly.

People were talking about the FN AUG barrels starting to fail around 4k rounds I think. Chrome flaking/peeling and wearing off the bore. That's bad. They should last closer to 10k if they were made right.

Idk if this production issue affected other chrome-lined barrels FN was producing, or just the AUG barrels.

It seems the last chrome-lined AUG barrels known to be awesome were those produced by Sabre Defence for the original AUG A3, and the Austrian barrels produced by Steyr themselves (which haven't been commonly sold here since they were last imported in 1989 on complete AUGs, with some additional later imports as spare barrel assemblies by PJ's I think).

(I suppose I should +1 the heavy Australian ADI barrels used on the USR in the 1990s. They were chrome-lined as well, and reportedly very precise.)
Link Posted: 3/12/2020 1:17:25 PM EDT
I have Sabre 16”, FN 16”, and Steyr nitride 20”.
The nitride barrel is amazing.
With Norma 223 55gr black box (actual Norma made), it was doing consistent 1.1 - 1.4 MOA 10rd group at 100 yards with 4x ACOG
Link Posted: 3/12/2020 1:54:10 PM EDT
Slight thread drift, but,

What is the acceptable MOA performance of the AUG in military service?
I was initially surprised the M4 platform had what many people would consider less than stellar 4 MOA standards.
Link Posted: 3/12/2020 2:00:53 PM EDT
I tested 3 nitrided AUG bbls, one started losing accuracy at 3500-4000 rds under normal use, one i abused because of a major stringing problem. It ended up going to a host gun and by 6000 rounds was keyholing. The 3rd I never fired. Early FN barrels were very good but suffered from quality control issues later on. The nitrate barrels were all less accurate than the FN chrome barrels that i shot. Chrome lined barrels from Austria are still the best but not really an option. Steyr may have got their nitriding and finishing process worked out for the new US AUG barrels, don’t know. I don’t buy anything new from Steyr USA now. I will say this, Steyr Austria still uses CLB for a reason. there are still a few people at Steyr USA that won’t try to hide this fact... of course they don’t work in marketing either. The whole reason Steyr USA uses nitride isn’t for its superiority, it’s because they literally don’t know how to properly chrome line a barrel.
Link Posted: 3/12/2020 4:42:54 PM EDT
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Originally Posted By FullAssault:
I tested 3 nitrided AUG bbls, one started losing accuracy at 3500-4000 rds under normal use, one i abused because of a major stringing problem. It ended up going to a host gun and by 6000 rounds was keyholing. The 3rd I never fired. Early FN barrels were very good but suffered from quality control issues later on. The nitrate barrels were all less accurate than the FN chrome barrels that i shot. Chrome lined barrels from Austria are still the best but not really an option. Steyr may have got their nitriding and finishing process worked out for the new US AUG barrels, don't know. I don't buy anything new from Steyr USA now. I will say this, Steyr Austria still uses CLB for a reason. there are still a few people at Steyr USA that won't try to hide this fact... of course they don't work in marketing either. The whole reason Steyr USA uses nitride isn't for its superiority, it's because they literally don't know how to properly chrome line a barrel.
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Since they have the machines now to make the CHF barrels in-house, they should contract with Daniel Defense to get them chrome lined
Link Posted: 3/12/2020 4:43:51 PM EDT
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Originally Posted By FullAssault:
I tested 3 nitrided AUG bbls, one started losing accuracy at 3500-4000 rds under normal use, one i abused because of a major stringing problem. It ended up going to a host gun and by 6000 rounds was keyholing. The 3rd I never fired. Early FN barrels were very good but suffered from quality control issues later on. The nitrate barrels were all less accurate than the FN chrome barrels that i shot. Chrome lined barrels from Austria are still the best but not really an option. Steyr may have got their nitriding and finishing process worked out for the new US AUG barrels, don’t know. I don’t buy anything new from Steyr USA now. I will say this, Steyr Austria still uses CLB for a reason. there are still a few people at Steyr USA that won’t try to hide this fact... of course they don’t work in marketing either. The whole reason Steyr USA uses nitride isn’t for its superiority, it’s because they literally don’t know how to properly chrome line a barrel.
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Good to know.  In my usage experience I suspect that not all maloniting is the same.  There's cheap-fast surface corrosion resistant maloniting; which is what your $80 AR barrels come with.  And then there's true all-out hardning maloniting.  I have a stainless barrel that was separately malonited by an oil-field tool hardnening company.  It wins 600 yard matches at 6000 rounds still, and still looks crisp.

And then I had a cheap other AR BBL pre malonited, that you can pretty much watch the throat erode with each outing.
Link Posted: 3/12/2020 6:50:04 PM EDT
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Originally Posted By lazyengineer:

Good to know.  In my usage experience I suspect that not all maloniting is the same.  There's cheap-fast surface corrosion resistant maloniting; which is what your $80 AR barrels come with.  And then there's true all-out hardning maloniting.  I have a stainless barrel that was separately malonited by an oil-field tool hardnening company.  It wins 600 yard matches at 6000 rounds still, and still looks crisp.

And then I had a cheap other AR BBL pre malonited, that you can pretty much watch the throat erode with each outing.
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The bbls I had were early versions, they may be better at it now but the ones I had definitely were questionable. I’ve literally had untreated non CHF barrels that held up better. IMO there is no reason Steyr USA shouldn’t be able produce something on par with Steyr Austria but they fall short in my eyes. Don’t give me wrong I love the AUG but Steyr USA has got in the habit of making poor decisions lately that leave it’s customers with black eyes.
Link Posted: 3/12/2020 7:10:05 PM EDT
[Last Edit: 3/12/2020 7:12:21 PM EDT by Zeebz]
I actually took mine out today and shot some test groups with it at 100 yards after I zeroed it with my initial load at 50 yards.  The optic is a Vortex Strike Eagle 1-6.  I'll post images from my targets below.  Above each image is the load and group size.  Most groups were 3 shots, and I had two 10 shot groups I did with 62gr green tip.  These aren't every group I shot, as there some that were larger.  The ones here are the best groups I got on the day with each load.  The Federal 69gr SMK was pretty consistent, where-as the Hornady Superformance was decent.

62gr green tip - 10 shot group - 2 1/2"


62gr green tip - 10 shot group - 2"



Federal 69gr Sierra MatchKing BTHP - 3 shot group - 5/8"



Federal 69gr Sierra MatchKing BTHP - 3 shot group - 1/2"


Federal 69gr Sierra Matchking BTHP - 3 shot group - 5/8"



Hornady 55gr Superformance - 3 shot group - 1 1/8"


Hornady 55gr Superformance - 3 shot group - 1 3/8"

Link Posted: 3/12/2020 7:28:32 PM EDT
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Originally Posted By mcantu:...they should contract with Daniel Defense to get them chrome lined
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But they vend out their chrome lining. It’s a specialized process and no one does it in house.

The issue with melonite is throat erosion due to flame temperature. So, no matter the firing schedule, chrome lining will last longer than melonite.
Link Posted: 3/12/2020 7:43:45 PM EDT
How were the CL 16'' AUG barrels Pete sold a few years back? [made in the USA]
Link Posted: 3/14/2020 9:15:09 AM EDT
In for this since I have three spares.

Also, did Pete’s parts kits come with a barrel? I got one of those, too.
Link Posted: 3/14/2020 12:28:27 PM EDT
[Last Edit: 3/14/2020 12:29:34 PM EDT by kiddsf]
The Steyr AUG nitrided barrel is plenty accurate :)
With Norma 223 55gr black box (not the new red box Lake City), 100yards, 10rd, 4x ACOG

Link Posted: 3/14/2020 1:18:15 PM EDT
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Originally Posted By kiddsf:
The Steyr AUG nitrided barrel is plenty accurate :)
With Norma 223 55gr black box (not the new red box Lake City), 100yards, 10rd, 4x ACOG

https://live.staticflickr.com/65535/49658762341_07e5b9a769_o.jpg
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Great shooting!
Link Posted: 3/15/2020 9:58:02 AM EDT
[Last Edit: 3/15/2020 9:58:48 AM EDT by RotorWash109]
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Originally Posted By FullAssault:
I tested 3 nitrided AUG bbls, one started losing accuracy at 3500-4000 rds under normal use, one i abused because of a major stringing problem. It ended up going to a host gun and by 6000 rounds was keyholing. The 3rd I never fired. Early FN barrels were very good but suffered from quality control issues later on. The nitrate barrels were all less accurate than the FN chrome barrels that i shot. Chrome lined barrels from Austria are still the best but not really an option. Steyr may have got their nitriding and finishing process worked out for the new US AUG barrels, don’t know. I don’t buy anything new from Steyr USA now. I will say this, Steyr Austria still uses CLB for a reason. there are still a few people at Steyr USA that won’t try to hide this fact... of course they don’t work in marketing either. The whole reason Steyr USA uses nitride isn’t for its superiority, it’s because they literally don’t know how to properly chrome line a barrel.
View Quote
New owner here who I really hope more than 4000 rounds out of a barrel. That’s just terrible.
Link Posted: 3/15/2020 1:34:36 PM EDT
Does Made in USA mean nitrided? Can anyone post a pic showing the difference?
Link Posted: 3/15/2020 1:48:09 PM EDT
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Originally Posted By xdmikey:
Does Made in USA mean nitrided? Can anyone post a pic showing the difference?
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No because mine is Chromed.
Link Posted: 3/15/2020 8:51:14 PM EDT
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Originally Posted By RotorWash109:

New owner here who I really hope more than 4000 rounds out of a barrel. That’s just terrible.
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Originally Posted By RotorWash109:

New owner here who I really hope more than 4000 rounds out of a barrel. That’s just terrible.
Steyr could have worked out their issues, none of the nitrided bbls I tested got anywhere near the accuracy shown in the posts above. The best group (2.5 moa)  I ever got from one was when the bbl was cold and from a lead sled. The only bbls that I’ve ever got moa were 16” Austrian bbls.

Originally Posted By xdmikey:
Does Made in USA mean nitrided? Can anyone post a pic showing the difference?
yes and no. All US AUGs made within the past year will be nitrided. Before that they were chrome. All other AUG world wide are CL.  You can tell by the chrome ring on the back.


Nitrided (small polished ring)


Chrome Lined (large chrome ring)
Link Posted: 3/17/2020 9:50:13 AM EDT
Thanks for the pics FullAssault
Link Posted: 3/17/2020 10:08:39 PM EDT
I have only one nitride barrel. I see no lessened or degraded accuracy compared to a typical FN AUG barrel. It's full-time suppressed with wolf gold so I wouldn't be able to say exactly how it compares to CL barrels, but I'm pleased with it thus far.

I'm not pleased that Steyr's cheaped out, but whatever - I'm not quite happy with their direction either...
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