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Thread: flash hider install

  1. #1
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    flash hider install

    Installed my flash hider with a new crush washer and only had to tun it a little more than an eighth of a turn to get it to line up. It's a standard A2
    Is that enough?

  2. #2
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    should be fine. Use a torque wrench? get a reading?

    If you're not using it as a suppressor mount I wouldn't worry about it. I'm having the opposite problem with an upper and am having to file down the crush washer.

  3. #3
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    c. When using a constant torque washer, replace the compensator as follows:

    (1) Install the constant torque washer on the barrel with concave face facing the
    compensator;

    (2) Screw the compensator on until it contacts the face of constant torque washer; and

    (3) Use the combination wrench and a 1/2 inch drive ratchet to tighten the compensator 90° minimum to 460° maximum, from first contact; or

    d. When using a laminated compensator spacer, replace the compensator as follows:

    (1) Install the compensator spacer on the barrel with the laminations facing the
    compensator;

    (2) Screw the compensator on hand tight; and

    (3) Use the combination wrench and a 1/2 inch drive torque wrench to tighten the
    compensator to a torque of between 62.4 and 69.1 N·m (46 and 51 ft-lb).

    NOTE

    If upon installation and torquing the middle slot of the compensator is not uppermost and aligned with the front sight, remove the compensator and reduce the thickness of the compensator spacer by removing sufficient laminations to facilitate correct alignment after torquing is carried out.
    “A leader is best when people barely know he exists, when his work is done, his aim fulfilled, they will say: we did it ourselves.” -Lao Tzu


    http://quibphotography.com/

  4. #4
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    If you can't remove it by hand you'll be alright although its not the by the book way QUIB posted. Not a lot of people have all the tools and blocks needed to get that specific of a torque measurement.


    If you are using a can with it you shouldn't be using a crush washer in the first place.

  5. #5
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    Quib,

    The TMs That I have seen say that when useing a peel washer to torque the FS to 15-20 Ft. Lbs.
    Last edited by 556Cliff; 01-14-10 at 12:20.

  6. #6
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    I'm at the office at the moment, and don't have access to my TMs.

    I pulled that reference off line here:

    MAINTENANCE INSTRUCTIONS
    C7 FAMILY OF COMBAT WEAPONS


    http://http://www.coltcanada.com/techpubs.htm

    ETA: You'll find this torque called out at:

    - Figure 3-1-1 Torque Limits
    - Page 3-2-15

    I'll agree that torque seems high and contradicts the -23 torque.
    Last edited by Quib; 01-14-10 at 13:24.
    “A leader is best when people barely know he exists, when his work is done, his aim fulfilled, they will say: we did it ourselves.” -Lao Tzu


    http://quibphotography.com/

  7. #7
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    TM 9-1005-319-23&p dated 1987 has the torque range from 15-20 ft-lb. Page 3-44. I can't find peel washers in the latest change 8 TM.

    This is the procedure for installing a FH with a crush washer.

    NOTE

    Recessed washer does not require torqueing


    15. Assemble compensator to the barrel
    using recessed washer (12991533) (fig
    C-6, item 5) with the large diameter of
    the recessed washer forward toward
    the compensator and the small
    diameter rearward toward the barrel.
    Tighten the compensator hand tight and
    then tighten a minimum of ¼ turn but no
    more than 1 ¼ turns to align the center
    of the middle slot (4) with the front sight
    post (5). Tighten the compensator to
    complete the alignment with the front
    sight post. Do not over rotate. If the
    compensator is turned backwards, the
    compensator will loosen, so the
    procedure must be started over with a
    new recessed washer.
    Last edited by 5pins; 01-14-10 at 14:07.

  8. #8
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    Quote Originally Posted by 5pins View Post
    I can't find peel washers in the latest change 8 TM.
    Discontinued perhaps.

    ETA: -23&P W/C 8: Figure C-7 of the IPC covers the FH installation. The latest change to affect that figure was Ch. 7. Could be that change or a change prior to 7, deleted the peel washer.
    Last edited by Quib; 01-14-10 at 15:18.
    “A leader is best when people barely know he exists, when his work is done, his aim fulfilled, they will say: we did it ourselves.” -Lao Tzu


    http://quibphotography.com/

  9. #9
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    A minimum of 1/4 turn so I'm not there. I can't go a full revolution, I don't a big enough vice.
    Any suggestions on how to get it tighter without sending it to some one?
    File the crush washer or pre crush in a vice until I can get half a turn on the flash hider. neither sound good to me.

    Thanks for all the help

  10. #10
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    A little off topic but, where can you get a constant torque washer? TIA
    What can one man do? You never know until you try.

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