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Thread: AR gas block removal

  1. #1
    Boolit Grand Master popper's Avatar
    Join Date
    Jun 2011
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    10,572

    AR gas block removal

    Low profile adjustable setscrew block. Tried a little heat, Coke & hammer - it don't come off darn it. Barrel is not dimpled, went on easy. Want to drop in in the US cleaner so the adjuster works again. Any ideas? Guess next time I'll get a clamp on.
    Whatever!

  2. #2
    Boolit Grand Master

    Join Date
    Mar 2013
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    Northwest Ohio
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    Build a clay dam around the front edge about 3/8" deep and soak with shooters choice kroil mixed 50-50. wrap some rags beneath it to catch what runs thru. When removing work with a twisting motion to loosen build up and twist off. Moe than likely there is a carbon build up between barrel and block holding it in place.

  3. #3
    Boolit Bub
    Join Date
    Apr 2017
    Location
    Missouri
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    45
    More heat works wonders, just don't get it glowing! Try to remove the set screw while still hot, but stop turning before you strip it out. Maybe start with kroil and light taps, reapplied for days, and then attempt to remove.

    If you do strip the screw out, it should be fairly easy to drill out the center of the set screw to remove the block.

    Do you have an impact driver? These sometimes work very well with the simultaneous application of impact and torque to get a stuck screw moving.

    Good luck!

  4. #4
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    Texas by God's Avatar
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    Try B12 carb cleaner. It may loosen enough crud to help removal.

    Sent from my SAMSUNG-SM-G930A using Tapatalk

  5. #5
    Boolit Master
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    Space Coast, FL
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    Probably carbon, would think carb cleaner as stated above, Kroil?

  6. #6
    Boolit Master
    Elkins45's Avatar
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    Northern KY
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    ATF/acetone mixed 50/50 is reputed to be the most effective penetrant known to man. Maybe drip it with that for a day or so.

    Wrap a strap wrench around it and try to wiggle it from side to side.

    I suppose if all else fails you could back out the set screw and shoot a couple of rounds to see if that jars it free. I would save that as a last resort.
    NRA Endowment Member

    Armed people don't march into gas chambers.

  7. #7
    Boolit Master
    Join Date
    Aug 2008
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    Southern Ohio
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    I just removed one that I had bedded with loctite. I used heat and then a pair of channel lock pliers to twist the gas block back and forth. I used leather to keep the pliers from damaging the gas block. Heat, Oil, Twist, insert sharp pry bar and move gas block back slightly, Tap with brass punch and hammer. Repeat for 30 minutes. Progress is slow, but nothing was damaged.

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BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
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GC Gas Check