PDA

View Full Version : FSB removal help



ztf HITMAN
02-24-10, 20:22
Can anyone please link me to a tutorial, preferably with pictures, of how to remove a mil-spec FSB??? I tried the search engine but quite unsuccessfully...Would it be easier to shave the FSB?? I'd like to get a 12" rail for my Middy, and would prefer to go the removal-and-buy-a-gas-block route...Thanks..:confused:

PitbullTactical
02-24-10, 20:25
here is a brownells video I found on youtube. Should give you an idea of what you need to do
http://www.youtube.com/watch?v=ZOA0jA0Ei74

Sone
02-24-10, 20:30
I would take it off and shave it, the best FSB out there is a pinned one

ztf HITMAN
02-24-10, 20:31
Is it reasonable to leave the FSB on the barrel and shave it, carefully??

Sone
02-24-10, 20:37
i have heard some people do it, but I have done two and never would have been able to do it, the fsb is easy to take off so it wasnt a problem for me as I have all the tools.

ztf HITMAN
02-24-10, 20:44
Can you/ do you reuse the pins?? How about the gas tube pin?? Do you remove it before/after the two main pins??

PRGGodfather
02-24-10, 20:51
Yes, you can reuse the taper pins, although they may need to be shortened via grinding -- depending on much the FSB needed to be shaved.

The gas tube pin is a roll pin, so best practice is to replace it with a new one.

I remove the gas tube pin at the same time. It just makes it easier when removing the FSB, and reduces the risk of bending the gas tube.

A Brownells FSB block makes things easier.

ztf HITMAN
02-24-10, 20:51
Thanks for the input guys

Jeffy
02-24-10, 21:06
Is it reasonable to leave the FSB on the barrel and shave it, carefully??gotm4 has done a FSB while still on the barrel. He put an Omega 12.0 on a pinned 14.x for a customer a while back. Turned out really nice too but it was a lot of shaving.

https://www.m4carbine.net/showthread.php?t=39797

Here's a separate thread on shaved FSB's.

https://www.m4carbine.net/showthread.php?t=46668