Page 1 of 3 123 LastLast
Results 1 to 10 of 22

Thread: Remove and reinstall front sight?

  1. #1
    Join Date
    Aug 2010
    Posts
    260
    Feedback Score
    10 (100%)

    Remove and reinstall front sight?

    I need to remove my FSB to remove the handguard cap to install my new rail.

    I was curious if the FSB realigns itself when you reinstall it.

    I have a feeling it does, I just wanted to confirm.

    Rifle is factory BCM with F marked FSB.

    Thank you.

  2. #2
    Join Date
    Jun 2015
    Posts
    74
    Feedback Score
    0
    I'm still a newbie on here, but I can give you my experience. I have removed my FSB from my DD middy barrel with F marked FSB a couple of times now. I have had no problem putting it back on. When I line the FSB back up with the gas port correctly, from underneath, the taper pin holes line back up like they should. Then you only need to tap them back in. The only trouble I have ever had was getting those dadgum stubborn taper pins out to begin with.

  3. #3
    Join Date
    Apr 2007
    Location
    Texas
    Posts
    11,477
    Feedback Score
    46 (100%)
    It should be fine. Make sure you observe the orientation of the pins. BCM uses the appropriate taper pins.

    One of these is quite handy, by the way.

    http://www.brownells.com/gunsmith-to...prod20727.aspx

  4. #4
    Join Date
    Jul 2010
    Posts
    9,651
    Feedback Score
    45 (100%)

  5. #5
    Join Date
    Apr 2007
    Location
    Texas
    Posts
    11,477
    Feedback Score
    46 (100%)
    Agreed, a starter punch is a great idea, along with a 2-pound sledge.

    I also ordered the set of Starrett punches from Brownell's when I took Iraqgunz's armorer class. It was a good investment, and they have held up well.

    ETA: Here is a link to the set I got. http://www.brownells.com/gunsmith-to...prod12625.aspx

  6. #6
    Join Date
    Aug 2010
    Posts
    260
    Feedback Score
    10 (100%)
    Yeah I completely envisioned the attachment of the handguard cap differently, I had no idea it was wedged in there that tight. I figured it was just a matter of notching it with a Dremel and twisting it off, but if I knew what I know now I would've had that FSB block a week ago.

    I got the front pin below flush and the rear pin near flush with a 1/4" punch.

    I'm gonna man up tomorrow and knock it all the way out, I quit earlier because I felt myself wanting to rush and figured that's a bad place to be. So I figured sleep on it to avoid foul ups.

    Thanks for the info though guys, I appreciate it.

  7. #7
    Join Date
    Jan 2008
    Location
    AZ-Waging jihad against crappy AR's.
    Posts
    24,900
    Feedback Score
    104 (100%)
    Here's my recommendation. It's not based on internet readings, but what has worked for me. The hammer is the least of the issues.

    I secure this in a vise, with the FSB oriented to the correct way- http://www.brownells.com/gunsmith-to...prod12799.aspx

    Make sure it is clamped in solid. Do not use the taper pin punch. Start the pins by "shocking" them loose with the large punch from the Starrett set this one-

    http://www.brownells.com/gunsmith-to...prod12799.aspx

    Once you break them, then you can use the taper pin punch to knock them out. I usually ended up stepping the punch down to the next size once I have broke them free. I have done this with BCM, Colt, and other odd assorted ones.



    Owner/Instructor at Semper Paratus Arms

    Facebook: https://www.facebook.com/SemperParatusArms/

    Semper Paratus Arms AR15 Armorer Course http://www.semperparatusarms.com/cou...-registration/

    M4C Misc. Training and Course Announcements- http://www.m4carbine.net/forumdisplay.php?f=141

    Master Armorer/R&D at SIONICS Weapon Systems- http://sionicsweaponsystems.com

  8. #8
    Join Date
    Aug 2010
    Posts
    260
    Feedback Score
    10 (100%)
    Yeah I got it done this afternoon, ended up using a 1/8" nail set to knock them all the way out.

    I got it all back together and I'm pretty sure it's locked in good, but I just wanted to double check is if there is any way to make sure the pins are driven back in as much as they need to be?

    I hit them back in pretty good and it looks fine and is identical to my 6920 which I never touched, but I was just curious if there is a "proper" way.

    I'm happy I came across Paul's post about removing the pins from his company's rifles or else I would've been trying to whack them out with a 1/8" punch from start to finish.

    Always good info on this site, I appreciate the SMEs here.

  9. #9
    Join Date
    Jul 2010
    Posts
    9,651
    Feedback Score
    45 (100%)
    So you do not use a FSP bench block at all?

    Quote Originally Posted by Iraqgunz View Post
    Here's my recommendation. It's not based on internet readings, but what has worked for me. The hammer is the least of the issues.

    I secure this in a vise, with the FSB oriented to the correct way- http://www.brownells.com/gunsmith-to...prod12799.aspx

    Make sure it is clamped in solid. Do not use the taper pin punch. Start the pins by "shocking" them loose with the large punch from the Starrett set this one-

    http://www.brownells.com/gunsmith-to...prod12799.aspx

    Once you break them, then you can use the taper pin punch to knock them out. I usually ended up stepping the punch down to the next size once I have broke them free. I have done this with BCM, Colt, and other odd assorted ones.

  10. #10
    Join Date
    Jan 2008
    Location
    AZ-Waging jihad against crappy AR's.
    Posts
    24,900
    Feedback Score
    104 (100%)
    Other than to demonstrate what one looks like in my class. Not at all.

    Quote Originally Posted by titsonritz View Post
    So you do not use a FSP bench block at all?



    Owner/Instructor at Semper Paratus Arms

    Facebook: https://www.facebook.com/SemperParatusArms/

    Semper Paratus Arms AR15 Armorer Course http://www.semperparatusarms.com/cou...-registration/

    M4C Misc. Training and Course Announcements- http://www.m4carbine.net/forumdisplay.php?f=141

    Master Armorer/R&D at SIONICS Weapon Systems- http://sionicsweaponsystems.com

Page 1 of 3 123 LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •