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Posted: 2/15/2021 9:11:54 PM EDT
[#1]
Pin holes are drilled unique to the barrel and gas block. Holes won't line up except by divine intervention.
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Posted: 2/15/2021 9:19:31 PM EDT
[#2]
I've had FSB's from several, PSA uppers that I have changed out the FSB's some cut down some not.
I got LUCKY |
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Posted: 2/15/2021 9:40:15 PM EDT
[#3]
Better odds playing the Lotto.
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Posted: 2/15/2021 9:45:54 PM EDT
[#4]
FPNI
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Posted: 2/16/2021 8:33:53 AM EDT
[#5]
Ok, guess I'll breakout the dremel.
How hard is it to install an undrilled FSB on a barrel that has already been drilled? |
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Posted: 2/16/2021 9:00:07 AM EDT
[#6]
Quote HistoryQuoted: Ok, guess I'll breakout the dremel. How hard is it to install an undrilled FSB on a barrel that has already been drilled? Sending it to JT at Retro Arms Works is my suggestion. |
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Posted: 2/16/2021 9:15:10 AM EDT
[#7]
Quote HistoryQuoted: Ok, guess I'll breakout the dremel. How hard is it to install an undrilled FSB on a barrel that has already been drilled? It ain't easy. As mentioned, John Thomas (RAW) is who you seek. |
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Posted: 2/21/2021 2:03:39 PM EDT
[#8]
If you want to swap to a gas block but retain the ability to swap back to the FSB someday, a clamp on gas block would be the easiest way, by far.
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Posted: 2/21/2021 7:29:36 PM EDT
[#9]
Quote HistoryQuoted: It ain't easy. As mentioned, John Thomas (RAW) is who you seek. Quote HistoryQuoted: It ain't easy. As mentioned, John Thomas (RAW) is who you seek. Tigwelder1971: Sending it to JT at Retro Arms Works is my suggestion. |
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Posted: 2/22/2021 9:06:59 PM EDT
[#10]
Perhaps I'm just lucky, but I've put adjustable gas blocks on 2 AR15's and 1 PA10 and everything lined up with zero issues. The most troublesome part was getting the taper pins out of an A2 FSB - I thought about cutting it down, but the ID of some free-floating hand guards still will not clear what's left after doing that, so off it came. That's really the right way to go, not butchering a part to get it to work.
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Posted: 2/23/2021 7:26:20 AM EDT
[#11]
Quote HistoryQuoted: Perhaps I'm just lucky, but I've put adjustable gas blocks on 2 AR15's and 1 PA10 and everything lined up with zero issues. The most troublesome part was getting the taper pins out of an A2 FSB - I thought about cutting it down, but the ID of some free-floating hand guards still will not clear what's left after doing that, so off it came. That's really the right way to go, not butchering a part to get it to work. A cut down FSB can be just as small as a low profile gas block. 
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