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Basic
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Posted: 9/22/2013 5:53:20 PM EST
[Last Edit: 9/22/2013 6:41:56 PM EST by clayharvey]
I've got a build that just finished being Cerakoted and I've run into an issue with the Fortis REV 14" rail. I've got a Daniel Defense 14.5" barrel that was going to have a PWS FSC556 brake pinned but it's getting into the REV rail due to it being longer than 14". Stickman has posted a picture of a 14" REV/14.5" Barrel with a pinned Surefire MB556 brake that seems to clear ok but is anyone else running a similar setup without clearance issues? Below are two pics showing the base of the PWS brake being covered by the rail.

http://i817.photobucket.com/albums/zz94/techster82/fortis1_zps128ccbfd.jpg

http://i817.photobucket.com/albums/zz94/techster82/fortis2_zps0779645f.jpg

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Link Posted: 9/23/2013 12:01:29 PM EST
[Last Edit: 9/23/2013 12:01:59 PM EST by Marksman14]
Yeah that's an issue. What's your question though? The sf brake is longer and the ports are at the end. That's why it works where your setup doesn't.

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Link Posted: 9/23/2013 12:28:37 PM EST
The opinions expressed are my own and do not necessarily reflect the views of my
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Link Posted: 9/23/2013 12:54:23 PM EST
maybe you got experimental 15 in rail by mistake?
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Link Posted: 9/23/2013 1:02:42 PM EST
from Fortis site:

Length: 14.815"
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Link Posted: 9/23/2013 1:08:11 PM EST
get a diff muzzle brake
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Link Posted: 9/23/2013 2:27:45 PM EST
maybe kac mams break is longer?
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Link Posted: 9/23/2013 3:53:50 PM EST
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Originally Posted By Marksman14:
Yeah that's an issue. What's your question though? The sf brake is longer and the ports are at the end. That's why it works where your setup doesn't.
View Quote


My question is simply this: Is anyone else out there running a 14" Fortis Rail on a 14.5" barrel successfully, and if so what muzzle brake have you found that works? The only pic I've seen of a setup that looks like it may be functional is one that features the Surefire MB556. Unfortunately I don't have a store around me that stocks a wide selection of brakes that would allow me to test fit them prior to purchasing. If anyone knows of a brake that has ports further out than the PWS FSC556 I'd appreciate the info.



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Link Posted: 9/23/2013 4:06:37 PM EST
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What the hell happened there?

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Link Posted: 9/23/2013 4:18:13 PM EST
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Originally Posted By secretwheelman:
What the hell happened there?
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Originally Posted By secretwheelman:
What the hell happened there?


I believe the pressure from the upward muzzle blast caused the aluminum handguard to fracture since it wasn't clear of the handguard. Exactly what I am wanting to avoid.

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Link Posted: 9/23/2013 4:55:20 PM EST
http://www.ar15.com/mobile/topic.html?b=3&f=12&t=609705&page=3

look for m3racer similiar but different ....using aac balckout

i am thinking of a similar build but w/ a KX3
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Link Posted: 9/23/2013 7:02:40 PM EST
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Link Posted: 9/24/2013 11:36:46 AM EST
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Originally Posted By clayharvey:


My question is simply this: Is anyone else out there running a 14" Fortis Rail on a 14.5" barrel successfully, and if so what muzzle brake have you found that works? The only pic I've seen of a setup that looks like it may be functional is one that features the Surefire MB556. Unfortunately I don't have a store around me that stocks a wide selection of brakes that would allow me to test fit them prior to purchasing. If anyone knows of a brake that has ports further out than the PWS FSC556 I'd appreciate the info.


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Originally Posted By clayharvey:
Originally Posted By Marksman14:
Yeah that's an issue. What's your question though? The sf brake is longer and the ports are at the end. That's why it works where your setup doesn't.


My question is simply this: Is anyone else out there running a 14" Fortis Rail on a 14.5" barrel successfully, and if so what muzzle brake have you found that works? The only pic I've seen of a setup that looks like it may be functional is one that features the Surefire MB556. Unfortunately I don't have a store around me that stocks a wide selection of brakes that would allow me to test fit them prior to purchasing. If anyone knows of a brake that has ports further out than the PWS FSC556 I'd appreciate the info.





Any of the linear comps like the Troy Claymore, Flaming Pig, etc. would be your best option.

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Link Posted: 9/24/2013 3:57:24 PM EST
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Originally Posted By clayharvey:


I believe the pressure from the upward muzzle blast caused the aluminum handguard to fracture since it wasn't clear of the handguard. Exactly what I am wanting to avoid.
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Originally Posted By clayharvey:
Originally Posted By secretwheelman:
What the hell happened there?


I believe the pressure from the upward muzzle blast caused the aluminum handguard to fracture since it wasn't clear of the handguard. Exactly what I am wanting to avoid.
He's using an upside down A2, so I'm not sure that would do it.

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Link Posted: 10/11/2013 2:02:35 PM EST
I'm thinking about doing a 14.5" build with the Fortis 14, has anyone figured out anymore options besides the Surefire as far as muzzle devices go?
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Link Posted: 10/11/2013 3:51:50 PM EST
[Last Edit: 10/11/2013 3:52:59 PM EST by Shadow_Dancer]
Depending on how much thread you have to play with, you may be able to shim your compensator with washers and extend it a few millimeters which should give you the length you need to clear the leading edge of the rail.

You don't have to worry about the compensator backing off the barrel since you'll be pinning it.

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Link Posted: 10/11/2013 3:55:06 PM EST
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Originally Posted By secretwheelman:
He's using an upside down A2, so I'm not sure that would do it.
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Originally Posted By secretwheelman:
Originally Posted By clayharvey:
Originally Posted By secretwheelman:
What the hell happened there?


I believe the pressure from the upward muzzle blast caused the aluminum handguard to fracture since it wasn't clear of the handguard. Exactly what I am wanting to avoid.
He's using an upside down A2, so I'm not sure that would do it.


Blast wave probably reflected off the inside of the handguard and bounced up.

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Link Posted: 10/11/2013 4:10:34 PM EST
Rainier told me today that their XTC comp is compatible with the REV 14, still waiting to hear back from Fortis to see their input on the subject.
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Link Posted: 10/11/2013 4:26:33 PM EST
I am running 14.5 BCM with spikes dynacomp and 14 Fortis rev 400rnds and no problem yet.

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Link Posted: 10/11/2013 4:48:50 PM EST
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Originally Posted By Mudpie1313:
I am running 14.5 BCM with spikes dynacomp and 14 Fortis rev 400rnds and no problem yet.
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Would you mind posting a pic of that?
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Link Posted: 12/6/2013 4:44:24 PM EST
Wanted to do 14" Fortis rail on my 14.5" FN barrel. Unfortunately, didn't catch this thread until after purchasing the rail and a Griffin Armament M4SDII Flash/comp. Flash comp is currently shipping but I'm going to try it out and see if it clears. I spoke with a board member on here who ran the 14" Fortis with the Surefire MB556, he did his homework much better than I did and showed me that the Fortis comes in closer to 14.8". Not wanting to go with the Surefire MB556, and upon confirming the M4SDII Flash/comp will not clear (suspecting it won't from photos), I am going to either wait for a device more preferable to me to be discovered OR will look to pick up a 14" Centurion CMR. This rail measures 13.688" so I will not be as limited in my choices of muzzle devices.



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Link Posted: 12/6/2013 7:36:01 PM EST
[Last Edit: 12/6/2013 7:37:37 PM EST by drop11]
Not a cheap fix but something like a centurion 14.7 barrel would get it out the a bit more. Damned good barrel too. It would also let you run any comp you chose and not just the extended one made for 14.5 barrels.
I need a couple of the old style clamps for troy folding sights.
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Link Posted: 12/6/2013 10:44:00 PM EST
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Link Posted: 12/6/2013 10:45:09 PM EST
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