Originally Posted by
FISH5742
Yes. Longer rail. - FISH5742
I don't mean to offend, but I see you are a new member.
If you are using the cut down FSB and wanting a longer rail you will need to make sure you get one that is compatible with the Colt/GI barrel nut.
Or, you could remove the FSP and reuse the taper pins if they were not damaged during removal. For peace of mind you might want to use Loctite 640 sleeve retainer on the assembly: https://www.amazon.com/Loctite-37424.../dp/B0002KKTIG
Most guys think this guy is legit, so here;s a video on shaving down the FSB, you can do it! https://www.youtube.com/watch?v=5sBqDpi-Cb4
Some folks will advise against reusing the taper pins, but there are more technical applications than the M4 FSB that reuse undamaged taper pins.
Last edited by 26 Inf; 01-20-20 at 17:19.
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