close

Privacy guaranteed - Your email is not shared with anyone.

How do you tell if a flash hider is pinned?

Discussion in 'Black Rifle Forum' started by jbp84, Feb 20, 2012.


  1. jbp84

    jbp84
    Expand Collapse

    Joined:
    Sep 25, 2011
    136
    0
    Location:
    South Central Illinois
    I have a RRA mid-length I bought on-line. It came with the RRA aluminum free-float tube. I want to replace the tube with a MOE handguard. How can I tell if the flash hider is permanently pinned in place or not? I don't see any screws or welds or anything, but if it's permanently pinned I won't be able to remove the front sight assembly.

    Also, I'm going to have to replace the barrel nut and install a delta ring, correct?

    Thanks for the help!
     

    Wanna kill these ads? We can help!
  2. faawrenchbndr

    faawrenchbndr
    Expand Collapse
    DirtyThirty fan
    CLM

    Joined:
    Nov 24, 2005
    36,040
    398
    Location:
    Troy
    Is it a 14.5" or 16" barrel?
     

  3. surf

    surf
    Expand Collapse

    Joined:
    Jul 7, 2010
    1,019
    4
    Out of curiosity why are you going this route?
     
  4. DirectDrive

    DirectDrive
    Expand Collapse

    Joined:
    Mar 7, 2011
    59
    0
    There's a good chance that it's not pinned if your barrel is 16" not measuring the flash hider.
    If it's pinned (barrel is less than 16") you should be able to see the welded pin on one side of the FH.

    The pinned FH can be removed but generally the FH has to be destroyed in the process.

    Yes, you'll need a milspec barrel nut instead of the special threaded one that you have now.

    You will also need a "Delta Ring Assembly" which includes a "weld spring", a snap ring as well as the delta ring.

    You will also need a handguard endcap (triangle works well with MOE) and a gas block butted up to the end cap.
    The MOE handguard was designed around the USGI FSB style gas block. If you want iron sights you need to choose the correct gas block whether it's FSB or aftermarket.
    IOW, you can't mount sights on the MOE and still be considered a wise man. :)

    This is not a good project IMO and I like the MOE. (especially if your FH is pinned)
    I would leave this barrel as is and get another that was already set up correctly for the MOE handguard.

    You could sell off the upper as an assembly or sell just the barrel/handguard in the Equipment Exchange.
     
    #4 DirectDrive, Feb 20, 2012
    Last edited: Feb 20, 2012
  5. jbp84

    jbp84
    Expand Collapse

    Joined:
    Sep 25, 2011
    136
    0
    Location:
    South Central Illinois
    I like the look and feel of the MOE handguard. I already have the MOE stock and pistol grip in FDE, so I want to add the handguard so everything matches. This is a purely plinking/fun gun. There's no real reason other than aesthetics.
     
  6. jbp84

    jbp84
    Expand Collapse

    Joined:
    Sep 25, 2011
    136
    0
    Location:
    South Central Illinois
    It's 16"
     
  7. WoodenPlank

    WoodenPlank
    Expand Collapse
    Who?

    Joined:
    May 15, 2010
    7,958
    3
    Location:
    NW Florida
    For what you want to accomplish, you may be better off selling the current upper, and using the funds to purchase an upper than works with standard handguards. As is, you are going to need to make some significant changes to the rifle to go back to standard handguards.
     
    #7 WoodenPlank, Feb 20, 2012
    Last edited: Feb 20, 2012
  8. jbp84

    jbp84
    Expand Collapse

    Joined:
    Sep 25, 2011
    136
    0
    Location:
    South Central Illinois
    The barrel's 16", and I don't see a welded pin anywhere, so I think I should be able to remove the FH without damaging it or the barrel. (I hope). Thanks for the advice. This is my first AR, and I appreciate the knowledge.

    I should have mentioned...it has a front sight block. Assuming I don't damage it while removing it, I'll be able to re-use it right? RRA sells a delta ring kit for $10, barrel nut is $6.50 and a handguard end cap for $2. I'm sure I could probably find them even cheaper if I looked around.

    Out of curiosity...why don't you think this is a good project? Do you mean if the FH is pinned and can't be removed, or just in general? Like I said, I'm new at this so I appreciate the advice.
     
  9. WoodenPlank

    WoodenPlank
    Expand Collapse
    Who?

    Joined:
    May 15, 2010
    7,958
    3
    Location:
    NW Florida
    Just general. Anything involving removal of the barrel nut is usually not a project to be taken lightly, especially by an AR newbie.
     
  10. Patriot III

    Patriot III
    Expand Collapse

    Joined:
    Jan 20, 2012
    221
    0
    Location:
    Land of the Free
    I'm sure there's someone out there with an RRA carbine upper with standard handguards that would be more than happy to trade with you.
     
  11. jbp84

    jbp84
    Expand Collapse

    Joined:
    Sep 25, 2011
    136
    0
    Location:
    South Central Illinois
    Yeah, after the advice of others and reading some stuff elsewhere, I think selling/trading is the way to go.
     
  12. Reb 56

    Reb 56
    Expand Collapse

    Joined:
    Mar 12, 2007
    1,774
    0
    Location:
    South Texas
    I'd much rather have a free float tube than a MOE, why not get some FDE rail guards?
     
  13. faawrenchbndr

    faawrenchbndr
    Expand Collapse
    DirtyThirty fan
    CLM

    Joined:
    Nov 24, 2005
    36,040
    398
    Location:
    Troy

    I would suggest sending the upper to a Shop like Adco.
    Better off reconfiguring your upper the way you want it,
    vs, starting with a used, unknown condition, upper.
     
  14. DirectDrive

    DirectDrive
    Expand Collapse

    Joined:
    Mar 7, 2011
    59
    0
    Nah.
    He'd have more into the project than just selling off and re-purchasing.
     
  15. DirectDrive

    DirectDrive
    Expand Collapse

    Joined:
    Mar 7, 2011
    59
    0
    The OP probably doesn't care what you like.
    He said he wants a MOE handguard.
     
  16. DirectDrive

    DirectDrive
    Expand Collapse

    Joined:
    Mar 7, 2011
    59
    0
    Yep.
    It can be done, but it's doing it the hard way.

    Here's what I did on my last one....

    16" Wilson barrel, Wylde chamber, stainless, A2 FH, F-height FSB, HBAR contour, triangle end cap
    $219 from Legal Transfers

    I put a MOE HG on it. I do not find it heavy and would not want a slimmer contour.

    Pete at LT is a little weird IMO, no people skills, so get your ship date confirmed before money changes hands.
    He's OK but sometimes he'll ship slow if you don't hold his feet to fire.
     
    #16 DirectDrive, Feb 21, 2012
    Last edited: Feb 21, 2012
  17. faawrenchbndr

    faawrenchbndr
    Expand Collapse
    DirtyThirty fan
    CLM

    Joined:
    Nov 24, 2005
    36,040
    398
    Location:
    Troy

    Possibly,.......but he would know the history of the upper.
    Adco would not charge very much for this, I would guess $100 max!
     
  18. DirectDrive

    DirectDrive
    Expand Collapse

    Joined:
    Mar 7, 2011
    59
    0
    Looks like it would be $160 plus shipping/ins.

    OP could probably sell off barrel assembly #1 to fund barrel assembly #2 and just about break even.
     
  19. faawrenchbndr

    faawrenchbndr
    Expand Collapse
    DirtyThirty fan
    CLM

    Joined:
    Nov 24, 2005
    36,040
    398
    Location:
    Troy

    Damn,........like I've said, dealing with a upper/barrel assy
    that he knows the history of is better than an unknown!

    Just my opinion, but it just makes more sense.
     
  20. jbp84

    jbp84
    Expand Collapse

    Joined:
    Sep 25, 2011
    136
    0
    Location:
    South Central Illinois
    I appreciate the help and advice from everyone. I've got some good options to think about now.