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9/21/2017 11:25:52 PM EDT
Does anyone know of an adjustable gas FSB? I'm not aware of any, but would be interested for a future build.
Does such an animal exist?
9/21/2017 11:59:22 PM EDT
[#1]
http://www.jprifles.com/buy.php?item=JPGS-2FS

This is what you are looking for.
9/22/2017 3:28:10 AM EDT
[#2]
Quote History
Quoted:
http://www.jprifles.com/buy.php?item=JPGS-2FS

This is what you are looking for.
View Quote
Dang, that's sweet! However, it's not a "pin in" model (I know... I'm weird, I like all my gas blocks pinned in place).
Are there any out there that are pinned in FSB's?
9/22/2017 4:15:59 AM EDT
[#3]
You can actually turn any FSB into an adjustable, you just have to drill and tap the gas channel and ad an adjustment screw, there is an small thread on here about someone who did it with both a LP gas block as well as a shaved FSB.

https://www.ar15.com/forums/ar-15/anyone_here_drill_a_standard_FSB_to_make_adjustable_gas_system_/4-611914/
9/24/2017 3:59:25 PM EDT
[#4]
Adjustable gas key would be an easier and less permanent solution. 
9/24/2017 4:53:34 PM EDT
[#5]
Quote History
Quoted:


Dang, that's sweet! However, it's not a "pin in" model (I know... I'm weird, I like all my gas blocks pinned in place).
Are there any out there that are pinned in FSB's?
View Quote
I have 2 of the jp adjustable A2 gas blocks. It comes with the pin to pin it in place.
You just have to drill the dimple on the gas block and pin it, no big deal.
The adjustment screw has another set screw to lock it so it doesn't back off.
I have a few thousand rounds through one of my jp A2's with no issues.
It is A2 height not F mark...

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