Barrel input needed

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11-14-16, 14:00
01svtL

Barrel input needed

I'm currently trying to decide between 10.5 or 11.5" CHF barrels for my pistol build (which may eventually be an SBR, not sure yet). It may be suppressed in the future, but not soon, as obviously even if I picked and purchased a suppressor today, it looks like it's taking anywhere from 9-15 months to go through approval. As such, I'll probably use a KX5 on whichever I choose for the time being, as I don't even plan to pull the trigger on a suppressor until early next year.

That said, I've been reading people saying there's no reason to go with something like Noveske CHF when you can get the BCM for less. Maybe that was true at one point, but Noveske's own website shows their 10.5" with gas block already pinned and ready to go for $350. The 11.5" BCM BFH STRIPPED is $310, so I'd probably be looking at $410 once a block is purchased and pinned. The DD 11.5" with pinned LPGB is $330, so why so much for the BCM? I haven't seen any DD 11.5s with pinned GB in stock anywhere, but HAVE found the stripped barrel for $289. So, is there something that I don't know that makes the BCM worth $20 over a DD? I've never seen anyone state a BCM barrel was more accurate than a DD. Would anyone expect the Noveske 10.5" to be more or less accurate than a 11.5" DD or BCM? (I ask because I remember reading posts in the past where people claimed their 10.5" Noveske was the most accurate AR they have ever owned, but I would imagine that was back when John was still around)
11-14-16, 14:04
01svtL

I'm also considering the Triarc Systems 10.5" TRACK barrel, since that type of rifling supposedly picks up a little velocity.
11-14-16, 14:18
Mysteryman

11.5" barrels are more reliable than their shorter cousins. That 1" of length makes a significant difference in dwell time which translates to more reliable performance. As for the price discrepancies between brands I couldn't tell you. I will ask this, does $20 make that much of a difference? I would go with whatever is available.

MM
11-14-16, 14:28
01svtL

Quote:

Originally Posted by Mysteryman

11.5" barrels are more reliable than their shorter cousins. That 1" of length makes a significant difference in dwell time which translates to more reliable performance. As for the price discrepancies between brands I couldn't tell you. I will ask this, does $20 make that much of a difference? I would go with whatever is available.

MM

Thanks for the reply. No, $20 doesn't make a difference, I just would have assumed the difference would have been the other way around with DD being the more expensive of the two, knowing the reputation of DD. That was also part of my reason for wondering if there was something new about these BCM barrels that I didn't know. I've never seen a BCM barrel being touted as even AS accurate as a Noveske or DD. I've seen that they are close and that their accuracy is acceptable, but that Noveske and DD seem to be accepted as the most accurate as far as CHF barrels go. But again, from DD, their 11.5 with their LPGB is $330. So I'm probably looking at a $80 difference between BCM and DD if I chose to wait on those to be back in stock.
11-14-16, 16:00
Iraqgunz

The Noveske barrels I have measured (port size) have been ginormous. Adding the KX5 isn't going to help it. I would stick with an 11.5" barrel.

There are other options than just Noveske and BCM. I have over a dozen AR's with CHF and standard barrels I cannot see any tangible difference. In addition there is no need to have a gas block pinned. I have over 40K aggregate rounds through multiple configs and have yet have a gas block loosen that was CORRECTLY installed.
11-14-16, 16:01
dylank0723

Quote:

Originally Posted by Iraqgunz

The Noveske barrels I have measured (port size) have been ginormous. Adding the KX5 isn't going to help it. I would stick with an 11.5" barrel.

There are other options than just Noveske and BCM. I have over a dozen AR's with CHF and standard barrels I cannot see any tangible difference. In addition there is no need to have a gas block pinned. I have over 40K aggregate rounds through multiple configs and have yet have a gas block loosen that was CORRECTLY installed.

do you think the noveske is over gassed?

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11-14-16, 16:17
Iraqgunz

Yes I do. There is no need for a port that size.

Quote:

Originally Posted by dylank0723

do you think the noveske is over gassed?

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11-14-16, 16:18
dylank0723

Quote:

Originally Posted by Iraqgunz

Yes I do. There is no need for a port that size.

remember the size?

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11-14-16, 16:28
01svtL

Quote:

Originally Posted by Iraqgunz

The Noveske barrels I have measured (port size) have been ginormous. Adding the KX5 isn't going to help it. I would stick with an 11.5" barrel.

There are other options than just Noveske and BCM. I have over a dozen AR's with CHF and standard barrels I cannot see any tangible difference. In addition there is no need to have a gas block pinned. I have over 40K aggregate rounds through multiple configs and have yet have a gas block loosen that was CORRECTLY installed.

Makes sense. I've never installed a gas block before, so I'm not exactly sure what "correctly" means, haha. Feel free to shoot me a PM with gas block recommendations and install tips. Maybe the DD 11.5" is the way to go after all if I don't need to pin a GB.
11-15-16, 04:38
Iraqgunz

.081-.082

Quote:

Originally Posted by dylank0723

remember the size?

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11-15-16, 04:39
Iraqgunz

Correctly means a barrel that is dimpled properly (stripped DD barrels are usually not), proper gas block fitment, Loctite on the set screws, etc...

Quote:

Originally Posted by 01svtL

Makes sense. I've never installed a gas block before, so I'm not exactly sure what "correctly" means, haha. Feel free to shoot me a PM with gas block recommendations and install tips. Maybe the DD 11.5" is the way to go after all if I don't need to pin a GB.
11-15-16, 05:53
Hkbeltfed

Quote:

Originally Posted by Iraqgunz

.081-.082

Mine is .078"
11-15-16, 10:08
dylank0723

Barrel input needed

Quote:

Originally Posted by Iraqgunz

.081-.082

yup that's big. isn't that the same size as a DD MK18 barrel?

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11-15-16, 10:59
26 Inf

Quote:

Originally Posted by 01svtL

Makes sense. I've never installed a gas block before, so I'm not exactly sure what "correctly" means, haha. Feel free to shoot me a PM with gas block recommendations and install tips. Maybe the DD 11.5" is the way to go after all if I don't need to pin a GB.

This gas block is bombproof: https://geissele.com/super-gas-block.html

Follow these instructions: https://d3cfki0l5o2ps6.cloudfront.ne...s-block-ai.pdf (which will, of course, be included)

Use the 'Easy and Secure Installation' - I've installed 6+ this way and haven't had an issue. I bought my first one with an ALG Rail just to save the hassle of ordering from another vendor. Glad I did, simple easy to install, good quality product as you might expect from Geissele.

I have this 10.5 on my SBR (which started as a pistol) http://www.gmriflebarrel.com/gm-m26-...56mm-nato-1-7/

It don't have a marque name, but all these boys do is make barrels - including for other manufacturers. As I mentioned, I have the barrel in my SBR, it shoots good, and ejects on the money if you are into the whole ejection angle thingy. I do have a LAW folding adapter on the SBR so the BCG does have the LAW extension plugged into the rear of the BCG. I use a standard carbine spring and an H1 buffer FWIW.

It is fun to put them together, jump in.
11-15-16, 11:27
jpmuscle

26,

On that 10.5 barrel did it come dimpled for the gas block and do you recall what the port size was?
11-15-16, 12:44
26 Inf

Quote:

Originally Posted by jpmuscle

26,

On that 10.5 barrel did it come dimpled for the gas block and do you recall what the port size was?

Was not dimpled - I dimple my own per the Geissele instructions. Port is big, .087 according to them. Mine isn't over gassed BUT I have whatever weight the LAW extension adds to the BCG and my suppressor is in jail so it is unsuppressed at this time. I am running an Iron Pig looking Krinkov flash suppressor.
11-15-16, 15:40
jpmuscle

Quote:

Originally Posted by 26 Inf

Was not dimpled - I dimple my own per the Geissele instructions. Port is big, .087 according to them. Mine isn't over gassed BUT I have whatever weight the LAW extension adds to the BCG and my suppressor is in jail so it is unsuppressed at this time. I am running an Iron Pig looking Krinkov flash suppressor.

Gotcha. Thanks for the info.
11-15-16, 16:23
01svtL

Quote:

Originally Posted by 26 Inf

This gas block is bombproof: https://geissele.com/super-gas-block.html

Follow these instructions: https://d3cfki0l5o2ps6.cloudfront.ne...s-block-ai.pdf (which will, of course, be included)

Use the 'Easy and Secure Installation' - I've installed 6+ this way and haven't had an issue. I bought my first one with an ALG Rail just to save the hassle of ordering from another vendor. Glad I did, simple easy to install, good quality product as you might expect from Geissele.

I have this 10.5 on my SBR (which started as a pistol) http://www.gmriflebarrel.com/gm-m26-...56mm-nato-1-7/

It don't have a marque name, but all these boys do is make barrels - including for other manufacturers. As I mentioned, I have the barrel in my SBR, it shoots good, and ejects on the money if you are into the whole ejection angle thingy. I do have a LAW folding adapter on the SBR so the BCG does have the LAW extension plugged into the rear of the BCG. I use a standard carbine spring and an H1 buffer FWIW.

It is fun to put them together, jump in.

Thanks for the response. Will that GB fit under a slimmer rail? I'm looking at the Fortis Rev 2.0 and SLR Ion.
11-15-16, 17:15
556BlackRifle

Quote:

Originally Posted by 01svtL

Thanks for the response. Will that GB fit under a slimmer rail? I'm looking at the Fortis Rev 2.0 and SLR Ion.

Can't say for sure with the Fortis but it will not fit under most slim rails.

Edited to add:

Just looked it up and the Fortis Rev II ID is 1.34". It will not fit without contact as I've tried the Super Gas Block on an NSR with an ID of 1.35" and it made contact. When compared with a true low profile gas block the differences are obvious.

http://fortismfg.com/ar15-fortis-REV...rail-system-12
11-15-16, 17:21
26 Inf

Attachment 42425

Quote:

Originally Posted by 01svtL

Thanks for the response. Will that GB fit under a slimmer rail? I'm looking at the Fortis Rev 2.0 and SLR Ion.

It should the ID's of both are a little smaller than the ALG Rails I use, but the rail on top should provided clearance. It is a low profile gas block.

BTW have you looked at the ALG Defense rails? A little less pricey and I think the attachment is more secure than the SLR Ion, not sure about the Fortis, I didn't pay attention when I checked the ID.

ETA: It looks as if 556BlackRifle has direct experience with a rail it wouldn't fir under, I'll defer to him.

Here is the cross section of the rail I was refering to -

Attachment 42425
11-15-16, 17:25
tom12.7

There's some better ways to approach this guys, there's a lot of fail here.
11-16-16, 08:36
01svtL

Quote:

Originally Posted by tom12.7

There's some better ways to approach this guys, there's a lot of fail here.

Please expand upon your statement. Seriously. I don't want to go buying parts that are a bad idea. Like I said, I started the build with a different plan in mind, but have since decided to go pistol with this one.
11-16-16, 17:18
tom12.7

While a pistol AR can use more gas than its SBR cousin, there's many base barrel offerings that may have a more suitable gas porting for your operation.
11-16-16, 17:43
556BlackRifle

Quote:

Originally Posted by tom12.7

While a pistol AR can use more gas than its SBR cousin, there's many base barrel offerings that may have a more suitable gas porting for your operation.

I have a pistol build in progress. Can you recommend any barrels? Looking at a 10.5 to 11.5 inch .556 and will be converting to an SBR when the stamp comes back.
11-16-16, 18:19
tom12.7

For a few reasons, I personally do not like AR pistols. I do not like the same gassing between a pistol and a SBR. I would tend to prefer different gassings between them among other things for function.
If you were to venture on to this, I would choose a 11.5" over a 10.5" for function and a few other matters.
11-16-16, 19:12
556BlackRifle

Thank you sir. Your advice is very much appreciated.
11-17-16, 01:16
MistWolf

I have a 10.5" 223 Wylde barrel that runs fine with an SLR adjustable gas block and H buffer. It also ran fine when I was using a rifle RE, buffer and spring.

What I've found while looking over chronograph data, is that in general, there is enough velocity difference between the 10.5" barrel and the 11.5" barrel to make that extra inch worth it. That said, I'm very satisfied with the performance of the 10.5" barrel. While I haven't shot the 6933 as much, it comes with an 11.5" barrel and is smooth. I don't think you can go wrong with either barrel length, but if you're looking for an advantage, get the 11.5" for the added velocity. I can't tell any difference in the handling between the two.

As for barrel maker, take a look at what Sonics or Faxon has to offer. Both make top quality barrels that cost much less than the price range you mentioned
11-21-16, 06:56
FaxonNathan

A pleasure to be mentioned. Let us know if we can help!