Time to Crank it

Discussion in 'General Firearm Forum' started by NQNPIII, Aug 7, 2020.

  1. NQNPIII

    NQNPIII Well-Known Member

    Building an AR upper. I need to torque/time the barrel nut. It is okay to pin the upper to an existing lower with a plastic block in the magwell, in a vise to time the hole for the gas tube?

    I don't want to twist and distort the lower.
     
    Last edited: Aug 7, 2020
  2. Danzig

    Danzig I do hood rat sh%t! Supporter

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  3. NQNPIII

    NQNPIII Well-Known Member

    I would like to shade tree this as I'm not into waiting for a tool to come in the mail if I don't have too. I have you tube to figure out how to actually torque it. Just don't want to fark up a lower.
     
  4. John in AR

    John in AR Well-Known Member Supporter

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    No help here, sorry. Most intricate things I've done to an upper are new gas block & tube. Never removed or installed the barrel to the receiver itself.
     
  5. NQNPIII

    NQNPIII Well-Known Member

    I did a .40 barrel and no alignment for a gas tube was needed, just torque.
     
  6. NQNPIII

    NQNPIII Well-Known Member

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  7. Olga17

    Olga17 C19 sounds like G19 Supporter

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    That Vism vise block comes in @ under $40, not bad.
    Should have bought that instead but the plastic/polymer one I have has been no issue.

    The cheap one has been working for me in a large vise.
    Warning, many complete uppers that are purchased tend to be over-torqued.
    My Grendel upper was torqued to about 110 ft lbs when shipped.

    If spare time @ work comes along I may have to make both the barrel nut wrench and the vise block.
     
  8. Danzig

    Danzig I do hood rat sh%t! Supporter

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  9. Silver-Bolt

    Silver-Bolt Well-Known Member

    Buy the tool. The lower isn't intended to hand that much torque. You might get away with it and you might not.
     
  10. NQNPIII

    NQNPIII Well-Known Member

    Post #7 says I ordered the tools.

    Barrel nut makers ought to do multiple holes in the barrel nuts.
     
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  11. NQNPIII

    NQNPIII Well-Known Member

    The vise block is on back order for a few weeks with no eta. Guess I will search to see who has one in stock as I want both of these up and running.
     
  12. David Bessler

    David Bessler New Member

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    They do. Depends on the make and model YOU buy. Some have multiple holes. Some have a barrel nut that is small diameter than the gas tube distance.
    Whether you damage the lower with a magazine block depends on how much torque you need to apply to get the nut passage into alignment (more is bad). I wouldn't risk lower damage by doing that.
    The best designed tool I've used is the Magpul BEV Block which I bought from Aero precision.
     
  13. Mike6tx

    Mike6tx Member

    This is what I use! Works great, have done quite a few builds with it!!
    upload_2020-8-11_21-3-12.jpeg
     
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  14. NQNPIII

    NQNPIII Well-Known Member

    I'm really not wanting to pop the A2 front sight off to get a different barrel nut on there.
     
  15. David Bessler

    David Bessler New Member

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    Similar in principle to the Magpul BEV block. Engages the barrel extension locking lugs inside of the barrel assembly. The BEV block embeds the tool in a block for easy clamping in a vise.