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SEI USCG Brake Question

This is a discussion on SEI USCG Brake Question within the The M14 forums, part of the M14 M1A Forum category; (hope this is the appropriate sub-forum for this question.) I've read that the SEI USCG Brake has a loose fit. Does anyone know if that ...


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Old March 18th, 2017, 09:25 AM   #1
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SEI USCG Brake Question

(hope this is the appropriate sub-forum for this question.)

I've read that the SEI USCG Brake has a loose fit.

Does anyone know if that problem has been remedied with the introduction of the "new and improved" version of said brake?

...or...

has the SEI USCG Brake always been called "new and improved"?

Thanks in advance.

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Old March 18th, 2017, 09:56 AM   #2
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Quote:
Originally Posted by converse View Post
(hope this is the appropriate sub-forum for this question.)

I've read that the SEI USCG Brake has a loose fit.

Does anyone know if that problem has been remedied with the introduction of the "new and improved" version of said brake?

...or...

has the SEI USCG Brake always been called "new and improved"?

Thanks in advance.
Where did you hear this? The dozen or so that I've worked with over the years had to be seated with a mallet.

Thanks from converse
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Old March 18th, 2017, 10:24 AM   #3
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Thanks for sharing your experience with this muzzle brake.

Here is where I read that. A few posts down on page 2.

Best Muzzle Brake

I also read another mention of "loose fit" before the above mentioned post in another thread that I can't find now.

I really want to try it on my rifle so I'm not looking for a problem with the device. If it fits properly then that's great news.

That said, this is some of the info I found when I was researching muzzle brakes for the M1A and just wanted to get some clarification.

Thanks again for sharing your experience with this muzzle brake.

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Old March 18th, 2017, 12:21 PM   #4
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I couldn't find a page 2 on that thread. I looked 3 times.

That last post mentions something about the castle nut. Just like the factory flash hider, you need to tighten the castle nut properly and then seat the set screw into a recess.

I have also used the National Match version of the USCG brake. It is a little longer and hides the flash better.

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Old March 18th, 2017, 12:34 PM   #5
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Quote:
Originally Posted by converse View Post
Thanks for sharing your experience with this muzzle brake.

Here is where I read that. A few posts down on page 2.

Best Muzzle Brake

I also read another mention of "loose fit" before the above mentioned post in another thread that I can't find now.

I really want to try it on my rifle so I'm not looking for a problem with the device. If it fits properly then that's great news.

That said, this is some of the info I found when I was researching muzzle brakes for the M1A and just wanted to get some clarification.

Thanks again for sharing your experience with this muzzle brake.


Just a word of advice.

When doing a search for info on this forum, always check the date of the post.

That post was put up in 2008, nine years ago.

If there was a problem with the fit, and complaints were made, I would think the problem would have been corrected by now.

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Old March 18th, 2017, 12:37 PM   #6
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Quote:
Originally Posted by KurtC View Post
I couldn't find a page 2 on that thread. I looked 3 times.

That last post mentions something about the castle nut. Just like the factory flash hider, you need to tighten the castle nut properly and then seat the set screw into a recess.

I have also used the National Match version of the USCG brake. It is a little longer and hides the flash better.
Oh yes, sorry I think I got my posts mixed up. I recall the other comment being on page two of another thread and got my wires crossed.

Anyway, Yes that was the post in which the author mentioned having come up with a fox for his fitment issue.

Again if there are not fitment then that's great news. I'm not looking for a problem with this brake.

Thanks again.

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Old March 18th, 2017, 12:41 PM   #7
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Naturally, every barrel is different. I have used them on USGI barrels and factory SAI. I cannot vouch for others, like Criterion, Krieger or Chinese.

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Old March 18th, 2017, 12:42 PM   #8
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Quote:
Originally Posted by converse View Post
(hope this is the appropriate sub-forum for this question.)

I've read that the SEI USCG Brake has a loose fit.

Does anyone know if that problem has been remedied with the introduction of the "new and improved" version of said brake?

...or...

has the SEI USCG Brake always been called "new and improved"?

Thanks in advance.
I have installed two SEI USCG Muzzle Brakes and they both were a snug fit. As Kurt mentioned, you must tighten the castle nut to a point were the set screw aligns with one of the notches, this requires a special tool.

Rich

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Old March 18th, 2017, 12:48 PM   #9
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I have installed two SEI USCG Muzzle Brakes and they both were a snug fit. As Kurt mentioned, you must tighten the castle nut to a point were the set screw aligns with one of the notches, this requires a special tool.

Rich
Thanks Rich!

Would the correct tool be castle nut pliers or is there a different or additional special tool required for the procedure?

Thanks again

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Old March 18th, 2017, 01:30 PM   #10
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Quote:
Originally Posted by wiz1997 View Post
Just a word of advice.

When doing a search for info on this forum, always check the date of the post.

That post was put up in 2008, nine years ago.

If there was a problem with the fit, and complaints were made, I would think the problem would have been corrected by now.

Thanks Wiz, yes I did see the date when I originally read it though I didn't consider the age of a thread to be reason enough to assume that a potential problem had since been corrected.

Sounds like it will be a non-issue though...fitting said brake to my SAI Scout bbl, with the right tools and correct procedure...of course there's no accounting for operator error on my part. ;)

Thanks again

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Old March 19th, 2017, 07:09 AM   #11
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Thanks Rich!

Would the correct tool be castle nut pliers or is there a different or additional special tool required for the procedure?

Thanks again
Castle nut pliers are available from Sinclair and other vendors, but some here have made a tool from one of those locking type welding clamps. You might try the search feature, the welding clamp ones are much stronger than the store bought ones.

Rich

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Old March 19th, 2017, 07:14 AM   #12
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Tight fit on my Criterion barrel.

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Old March 19th, 2017, 07:19 AM   #13
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Converse

I just found this video by Tony Ben, it shows the homemade castle nut pliers.

Rich

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Old March 19th, 2017, 08:09 AM   #14
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Originally Posted by BrokenVet View Post
Tight fit on my Criterion barrel.
Mine also

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Old March 24th, 2017, 04:11 PM   #15
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ConRich, Thanks I watched that video and saw his custom pliers and his explanation of the process was helpful too.

I didn't realize that the commonly available Castlenut Pliers were so prone to breaking but definitely good to know.

I'm moving forward with the SEI USCG Brake so will need to make those or roll the dice on the commonly available variety.

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