I will be picking up a sig 553lb. The barrel length is 13.6 inches without the flash hider. As such, I'm looking to see if I can find a good flash hider/brake to make it longer than 16 inches so that I don't have to SBR it. The surefire brake is 2.7 inches. I'm not sure that leaves me enough room with the threads in order to have it properly installed. Any suggestions? If you know of any other good brands that are 3 inches, that would definitely do it. Any and all input would be appreciated.
Good thread, however, does anybody else have any additional options.
My two cents, one of the few aftermarket muzzle devices I like personally, a Noveske KX-3 or KX-5. It should make length, and rediirects some of the muzzle blast downrange where it belongs. Advantage #2, the KX's are, well, kinda long. so adding one to a 16"-er makes things, well, kinda long. Yours will not be.
B.E. Meyers 249F works on 13.7" builds. I love mine. Weapon Outfitters is taking pre-orders.
https://www.weaponoutfitters.com/b-e...ash-hider.html
I believe SF flash hiders will bring you up to 16”.
Negitave. Unless they came out with a new longer one...Quote:
Originally Posted by Jmedic_
The surefire 3 and 4 prong flash hiders, MB, Warcomp, and closed tine Warcomp are all too short for 13.7 barrels.
Pretty sure dead air muzzle devices will meet the length restriction.
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A 13.6 barrel will need a muzzle device at least 3" long
A Dead Air device works for the 14 inch barrels (like those from Ballistic Advantage). It does NOT work for anything shorter.Quote:
Originally Posted by Furbyballer
I used a dead air FH on a 13.7 barrel. It required some extra shims, but I got it to 16.1 and it is plenty secure. I've shot it with my sandman-s and have not had any issues. You will need even more shims which might not be worth it. I would second the recommendation of the 249f.
Is 4" too long? https://www.brownells.com/rifle-part...prod82717.aspx
I don't know about that one but I've seen similar ones that not only did not hide flash, they enhanced it, and flash makes its own noise so the guns were flashy and extra loud.
https://donate.nra.org/donate
If you use a 2.7" (dead air FH) on a 13.7 barrel you are going to need .225" of shims. If your barrel is 13.6 you need .325" of shims. No way I would ever do that with a suppressor, ever. But to each his own. Seems like a small amount, but take a micrometer and put it at that value on the shoulder of the barrel and you lose half the muzzle threads if stacking it up on the 13.6. No thanks. What are you gaining on the 13.7 vs the 14.5? Worth the headache for half an inch total OAL?
Here is some simple math!
13.7+2.7= 16.4 minus .625 muzzle threads. Total length 15.775 inches. Needs greater then .225" worth of shims. Picture Below...
https://farm5.staticflickr.com/4780/...1b43dd74_z.jpg
13.6+2.7= 16.3 minus .625 muzzle threads. Total length 15.675. Needs greater then .325" worth of shims. Picture below..
https://farm5.staticflickr.com/4773/...69b48bdc_z.jpg
Ned,Quote:
Originally Posted by Ned Christiansen
I’ve been on the fence about one of the flash hiders for one of my SBR’s (5.56) that I didn’t plan on suppressing . What do you typically mount them on?
Thanks,
RTT
Well, mostly, 16" AR's. My experience on them with shorter barrels is not extensive but I find I agree with what Pat Rogers always said, that the shorter the barrel, the more they help with the noise. I have also used them on bolt guns up to 24"..... same deal, it takes the ragged edge off the noise from the shooter's perspective. If you're downrange within a 90 degree wedge you're sucking up that noise..... I can imagine a tactical advantage to that.
I do have one set up exactly as yours would be.. might be 13.5, I don't remember for sure but with the KX3 pinned and welded it made 16"-something. Make sure you measure with the megaphone removed from the KX.
Just SBR it. The 553LB is not going to look right with an extended flash hider.
Or get the Swiss made m4 hinge and a tail hook mod 2 brace and drive on. That is what I have on my 551 while I wait for my stamp.
If it is an accurate reproduction, I’d be a little concerned about the effectiveness. I know the OP wants to get to 16”, but he can do that without sacrificing all glass suppression.Quote:
Originally Posted by Rascally
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Can you share a link to the Swiss made hinge? I ordered this adapter:Quote:
Originally Posted by KTR03
http://usmachinegun.com/proddetail.php?prod=PAP-SAAR
And the tailhook Mod 2. I also ordered an SBA3 brace, it's on backorder. https://www.sb-tactical.com/product-category/brace/
I will give them both a try. I have a KAK shockwave but I like these two adjust like a standard stock. The SBA3 uses a standard Mil Spec RE. It is cheaper too. I have the TailHook on my CZ Scorpion and love it.
https://uploads.tapatalk-cdn.com/201...f8ab5391df.jpghttps://uploads.tapatalk-cdn.com/201...4a8228e12c.jpghttps://uploads.tapatalk-cdn.com/201...2c71e8d4de.jpgQuote:
Originally Posted by usmcvet
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Bought it either from JDI or gunfactory.ch. It doesn’t feel improvised or rigged. It is a good design.
Per your request. Two different braces to try.
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Thank You.ooks like it belongs there.Quote:
Originally Posted by KTR03
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I'm waiting on my M92 PAP AK pistol. I just tried a BCM endplate. It doesn't fit.
You're welcome. Glad you found the pics useful. I have been where you are at. In the last couple of years I have bought a 550 SP2, a 551P, a 553P, a 553RP, and have a 550P & 551 LB on order. If I had to do it all over again, given the ATF judgement on braces, I don't think I would have SBR'd my 553. The braces just work so well that I think they have a place. I travel in my tri state area a lot. Would be nice not to have to deal with an SBR. I could also carry it loaded in the car, as a pistol. That too is handy. Basically, all you are giving up is a little bit of stock comfort (although I think the Tailhook mod 2 might mitigate that), and the look. The look matters to me on the 551 because I think it is about the sexiest evil black rifle there is, but that look is all you are giving up. And if looks are important, I think the brace would look better than some weird long flash suppressor.Quote:
Originally Posted by usmcvet
Oh and then there is the whole 922r thing.
YMMV.
Best,
D
I guess you would be giving up a fvg as well.