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.308 FSB options


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Hey guys, I have been trying to find a solution to threading the S-.308 barrel and came up with this:

 

http://www.k-var.com/shop/product.php?prod...=290&page=1

 

Will these work with barrel diameter and all that? Or is the S-.308 barrel too big and would have to be turned down? Also, I know that 14x1 LH threads are standard for .30 cal brakes, so what is the standard cal. on brakes for 15x1? I hear the HK 91's in .308 were 15x1 as well as the HK 93's in .223. How 'bout 22x1.5? Can you get .30 cal brakes in 22x1.5? If 22x1.5 isn't standard enough, maybe the FSB could be turned to 15x1, or dare I say 14x1? These guys say that they use them on their conversions, but I'm not sure what their process is:

 

http://www.ak-103.com/rifles.html

 

Just wonderin' if anybody has any info. Thanks.

 

BTW, does anybody know of a good AK smith I could ship my guns to so as I could get some quality work done on 'em? My 'smith isn't familiar at all with AK's, so if somebody has a resource, it would be much appreciated. Thanks.

Edited by Maniac Jack
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Hey guys, I have been trying to find a solution to threading the S-.308 barrel and came up with this:

 

http://www.k-var.com/shop/product.php?prod...=290&page=1

 

Will these work with barrel diameter and all that? Or is the S-.308 barrel too big and would have to be turned down? Also, I know that 14x1 LH threads are standard for .30 cal brakes, so what is the standard cal. on brakes for 15x1? I hear the HK 91's in .308 were 15x1 as well as the HK 93's in .223. How 'bout 22x1.5? Can you get .30 cal brakes in 22x1.5? If 22x1.5 isn't standard enough, maybe the FSB could be turned to 15x1, or dare I say 14x1? These guys say that they use them on their conversions, but I'm not sure what their process is:

 

http://www.ak-103.com/rifles.html

 

Just wonderin' if anybody has any info. Thanks.

 

BTW, does anybody know of a good AK smith I could ship my guns to so as I could get some quality work done on 'em? My 'smith isn't familiar at all with AK's, so if somebody has a resource, it would be much appreciated. Thanks.

 

For the .308, you're going to have to turn the barrel down to accomodate any other FSB and brake. I installed a Romanian FSB on mine and threaded it 14mmx1.0LH. The FSB has the detent to retain the muzzle devices and I can use anything a 7,62 AK uses on the muzzle (personal preference). I could hook you up if you lived in my area, but I don't have a FFL so unless you can remove the barrel from the rifle shipping me the rifle is out of the question.

post-1981-1193502926_thumb.jpg

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Hey guys, I have been trying to find a solution to threading the S-.308 barrel and came up with this:

 

http://www.k-var.com/shop/product.php?prod...=290&page=1

 

Will these work with barrel diameter and all that? Or is the S-.308 barrel too big and would have to be turned down? Also, I know that 14x1 LH threads are standard for .30 cal brakes, so what is the standard cal. on brakes for 15x1? I hear the HK 91's in .308 were 15x1 as well as the HK 93's in .223. How 'bout 22x1.5? Can you get .30 cal brakes in 22x1.5? If 22x1.5 isn't standard enough, maybe the FSB could be turned to 15x1, or dare I say 14x1? These guys say that they use them on their conversions, but I'm not sure what their process is:

 

http://www.ak-103.com/rifles.html

 

Just wonderin' if anybody has any info. Thanks.

 

BTW, does anybody know of a good AK smith I could ship my guns to so as I could get some quality work done on 'em? My 'smith isn't familiar at all with AK's, so if somebody has a resource, it would be much appreciated. Thanks.

 

For the .308, you're going to have to turn the barrel down to accomodate any other FSB and brake. I installed a Romanian FSB on mine and threaded it 14mmx1.0LH. The FSB has the detent to retain the muzzle devices and I can use anything a 7,62 AK uses on the muzzle (personal preference). I could hook you up if you lived in my area, but I don't have a FFL so unless you can remove the barrel from the rifle shipping me the rifle is out of the question.

 

So how'd you turn the barrel down? It's damn near impossible to put an AK in a lathe and get the barrel spinning true enough to turn it. If it's possible for me to do it on my own then I'd deffinitely be willing to learn. Thanks.

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  • 2 weeks later...

Barrelled receivers can be turned down to any diameter on a good milling machine. I'm talking about a REAL mill, not a Harbor Freight chinese toy mill. You hold it vertically against an angle plate so it's hanging off the back edge of the table. Swing the head around and indicate the barrel straight up and down and sweep the diameter in so you are concentric to the bore.

Then use a boring head with the boring bar reversed and" VOILA", you have a Vertical Lathe.

Turn to the diameter you want and thread the barrel while you are centered over the bore.

 

Works great, do it all the time. You just have to find some one with a good vertical mill that knows what they're doin...................

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