I have an FSB which is obviously a smaller diameter than any other FSB's I have. So of course I am thinking pencil barrel, maybe SP1 etc...but what I can't find is why this FSB does not have the hole with the pin in the middle.
Any help where to direct me?
Oh and markings from all I can tell is B then R1 in a Circle then 2.
Thanks for any help.
Brandon
Posted: 11/9/2014 3:23:15 PM EDT
[#1]
Maybe it's for a 9mm AR?
Posted: 11/9/2014 4:01:06 PM EDT
[#2]
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Quoted: Maybe it's for a 9mm AR?
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This probably. Or a weird repro
Posted: 11/9/2014 4:06:34 PM EDT
[#3]
I am thinking that in early years they simply crammed the gas tube in the FSB. Later implemented the gas tube pin to hold gas tube in place rather than cramming it in?
Posted: 11/9/2014 4:11:10 PM EDT
[#4]
Quote History
Quoted: I am thinking that in early years they simply crammed the gas tube in the FSB. Later implemented the gas tube pin to hold gas tube in place rather than cramming it in?
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Don't think so.
It's probably for a 9mm or 22lr setup.
Posted: 11/9/2014 4:24:49 PM EDT
[#5]
Quote History
Quoted: I am thinking that in early years they simply crammed the gas tube in the FSB. Later implemented the gas tube pin to hold gas tube in place rather than cramming it in?
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So there is a hole for a gas tube?
Got a pic of that angle?
Posted: 11/9/2014 4:49:33 PM EDT
[#6]
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The one in question is the one on the left. The one on right is "F" marked new take off standard .750
