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Discussion Starter #1 (Edited)
Okay guys, I have read through the threads and have talked to a few people, but I am really confused about the Saker 7.62 trifecta muzzle break on the Scar17. I have tried the trifecta flash hider, which works fine with the suppressor, but has too much recoil without the suppressor on.

I'd like to set the record straight for anyone else who is trying to use the trifecta 7.62 muzzle break.

Here is what I think I understand...

1. The Scar17 barrel threads do not have enough shoulder to hold shims. That means that the trifecta flash hider is fine, but the trifecta muzzle break cannot be timed (i.e. aligned) properly.

2. Barrel threads are 5/8x24, so be sure to buy the correct size trifecta.

3. Don't ever use the barrel nut (that comes with the original break) to correct this problem
http://fnforum.net/forums/sbr-suppr...17-suppressor-concentricity-measurements.html

4. Use 30 ft lb torque and Rockset

5. Check bore concentricity.

I can try to put the beak on and see what happens. It might not be perfect, but might be "good enough". That is, as long as the vents are not sticking straight up and down it will be better than the flash hider.

What do you guys think. Has anyone else had any luck putting the muzzle break on a factory barrel? If so, please let me know how it went. Thanks.
 

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I've been looking for options to mount a brake on mine as well. Gemtech just came out with an "adapter" I guess you could say that give you a shoulder to use with shims with whatever muzzle device you want to use. Just wanted to make you aware if you haven't seen it.

Greg
 

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I think you pretty well nailed the issue :th_4_17_2:I went with the flash hider and to tell the truth never noticed recoil being that much different with no suppressor. Maybe it's just my perception, but I think 308 kicks no matter what. SCAR 17 is softer than most, but still can't make it feel like a 55gr 223. Of course with the suppressor on there is no problem with recoil.
 

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I noticed a slight increase in kick when I installed my trifecta flash hider. I have the muzzle brake and would rather use it. This gem-tech thingy might be the way to go.
 

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You can use the Saker shims on the 17 to time the brake. The brake is compatible with with the 17 and several of us here are using it. Just use the shims provided and be sure to torque it to spec and you should be good to go with a few drops of rocksett.
 

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I might just do that since I have the time. I have the saker 7.62 with madd mount. waiting on the stamp at the moment. I did notice the shims that came with the brake. How many shims did you need to use? And is the torque 30 IBS?
 

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Discussion Starter #8
I've been looking for options to mount a brake on mine as well. Gemtech just came out with an "adapter" I guess you could say that give you a shoulder to use with shims with whatever muzzle device you want to use. Just wanted to make you aware if you haven't seen it.

Greg
This looks great, thanks.

SCAR thread adapter

Anyone use this for a trifecta?
 

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Discussion Starter #9
You can use the Saker shims on the 17 to time the brake. The brake is compatible with with the 17 and several of us here are using it. Just use the shims provided and be sure to torque it to spec and you should be good to go with a few drops of rocksett.
Thanks. Why are people saying that there is not enough shoulder on the threads to where you can't use shims?
 

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Okay guys, I have read through the threads and have talked to a few people, but I am really confused about the Saker 7.62 trifecta muzzle break on the Scar17. I have tried the trifecta flash hider, which works fine with the suppressor, but has too much recoil without the suppressor on.

I'd like to set the record straight for anyone else who is trying to use the trifecta 7.62 muzzle break.

Here is what I think I understand...

1. The Scar17 barrel threads do not have enough shoulder to hold shims. That means that the trifecta flash hider is fine, but the trifecta muzzle break cannot be timed (i.e. aligned) properly.

2. Barrel threads are 5/8x24, so be sure to buy the correct size trifecta.

3. Don't ever use the barrel nut (that comes with the original break) to correct this problem
http://fnforum.net/forums/sbr-suppr...17-suppressor-concentricity-measurements.html

4. Use 30 ft lb torque and Rockset

5. Check bore concentricity.

I can try to put the beak on and see what happens. It might not be perfect, but might be "good enough". That is, as long as the vents are not sticking straight up and down it will be better than the flash hider.

What do you guys think. Has anyone else had any luck putting the muzzle break on a factory barrel? If so, please let me know how it went. Thanks.
I think the issue has been a bit overblown. Silencer Shop released a list of brakes they deem OK to use with the SCAR (including the AAC offerings), as long as the correct shims are used. I don't recall which of the top of my head but it is probably on their site. If not, contact them (good place to buy a muzzle device or can from anyway).
 

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Do these same issues plague the 16 as well? Going to get a Omega or saker sooner than later for it.
No. The 16 has a solid shoulder for mounting.
 

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Discussion Starter #15
I think the issue has been a bit overblown. Silencer Shop released a list of brakes they deem OK to use with the SCAR (including the AAC offerings), as long as the correct shims are used. I don't recall which of the top of my head but it is probably on their site. If not, contact them (good place to buy a muzzle device or can from anyway).
Thank you. Just so you know, the person who originally told me that I could not use the muzzle break, was a sales guy AT the Silencer Shop.
 

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Discussion Starter #17

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Unfortunately not everyone at the shop is knowledgeable on every platform. I apologize for the mis-information.
Any feedback on Dead Air or any newer muzzle brakes? Or is simply a matter of correctly shimming *any* muzzle brake? E.g. SureFire chamfered shim flipped around.
 

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Discussion Starter #20
I ended up using the original shims. All but one or two seemed to work best for me. Jeremy from the Silencer Shop was kind enough to send me the thicker shims that Patton used in his Specwar intsall http://fnforum.net/forums/sbr-suppr...-installing-specwar-7-62-brake-scar-17-a.html

However, these did not want to time properly for the Saker brake. Use the original shims and you should be good to go. Here is the link to the photos.

http://fnforum.net/forums/sbr-suppr...suppressor-install-how-perfect-do-i-have.html

BTW, Jeremy went out of his way to help. I really appreciated that and I will always buy my suppressors from the Silencer Shop.
 
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