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AR15.COM
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4/20/2008 4:53:03 PM EDT
I have a new 16" tactical model and it came with (I am assuming) a bored out AR15 A2 flash suppressor. The threads are the normal AR threads at 1/2x28.  I thought the 1/2x28 threading was unusual for a .308 barrel.

What .308 capable flash suppressors are out there in 1/2x28?
4/21/2008 5:01:28 AM EDT
[#1]
I guess you could get just about any AR15 flash hider and bore it out on your own like that one was...


Did you confirm that the threads were 1/2x28?

I don't know of any  .30 cal that come that way, even for AR10s, so I figure you are stuck with borring your own.
4/21/2008 11:38:10 AM EDT
[#2]
Might be worth looking at:

primaryweapons.com/store/pc/viewPrd.asp?idcategory=&idproduct=37
4/21/2008 12:27:55 PM EDT
[#3]

Quoted:
I have a new 16" tactical model and it came with (I am assuming) a bored out AR15 A2 flash suppressor. The threads are the normal AR threads at 1/2x28.  I thought the 1/2x28 threading was unusual for a .308 barrel.

What .308 capable flash suppressors are out there in 1/2x28?


A long time ago, I reported on a test of different FAL muzzle devices with respect to their effect on accuracy.  My test rifle was a stock StG 58, so my results might not pertain to your shorter-barreled version, because your barrel is likely a bit stiffer due to reduced length.

Long story short, the more weight you hung out there at the end of the std-length barrel, the better the accuracy.  I finally settled on a Belgian combo device with the addition of a South African clip-on compensator for daytime use.  Bayonet optional, but it was cut to allow full use of the vents on the combo device.  Slick.  The standard-length Stoll came in second, by a hair.

Again, this was a test of accuracy, not flash suppression.  I expect both the BCD and the Stoll wold have done well in FS capability.

As far as an AR-type flash suppressor is concerned, I doubt very much that it will be as effective on a FAL as it would be on an AR.  One needs only look at the longer length of the M1A/M-14 flash suppressor of similar design to conclude that an un-lengthened AR  flash suppressor will likely be sub-optimal. The two rifles fire cartridges which produce different amounts of exhaust gasses, thus the longer length of the M1A/M-14 FS as opposed to the smaller FS used with, similarly, the smaller 5.56 ctg.  Again, look at the length of the Brit-style FS for the FAL, the so-called Browning FS, which is similar in design to the AR-type.  Quite long and rather fragile, I'm told.  It did poorly in my tests on accuracy.

Note that a FS of different design, like the Vortex, might require a different (usually shorter) length to achieve the same (or better} level of flash suppression.

I apologize if this post does not answer your question directly, but hopefully the background inf provided will be useful.

4/22/2008 6:31:28 AM EDT
[#4]
Metric FAL Muzzle Threads 9/16-24 L.H.
4/22/2008 7:40:23 AM EDT
[#5]
Thanks for the great replies and suggestions guys! I have some more time before I am buying since it has a flash suppressor on it already. I just wanted a little more muzzle control.

FrenchKat, I am aware that most metric FAL's have the LH thread but strangely my DSA FAL does not. It is a measured 1/2x28.
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