Griffin ATM™ Barrel - Fits Glock® G43 - Threaded 1/2x28 - With Micro Carry Comp

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Griffin ATM (Advanced Threaded Match) Barrels are billet machined from 416R chromium stainless steel to exacting tolerances for the ultimate in drop in match performance.  5 axis machining done in a single work holding positions all critical dimensions on the breech ensuring theoretically perfect geometrical relationship of barrel, slide and locking lug. Chambers are honed and polished to ensure an extremely smooth surface finish and optimal reliability with a wide range of ammunition from training to duty ammo.  Two years of research and testing provided the appropriate knowledge to machine the barrel dimensions for a perfect fitment; providing the best possible accuracy without sacrificing factory reliability.  Designed with concealed carry users in mind, this barrel gives you the utility of accessory and suppressor support while providing uncompromising reliability.   Don't lose confidence in your carry handgun by using sub par components.  

For a limited time this barrel comes with our patent pending Micro Carry Comp, a $64.95 value and an impressive performance add on for your favorite carry piece.  The Micro Carry Comp ( MC²) provides a low signature (resists printing while carrying concealed), fits a wide range of holsters without modification, and provides noticeable recoil reduction for faster more accurate follow up shots with enhanced overall control of the firearm. The Micro Carry Comp's miniature and lightweight package has near zero perceived effect on the handling and storage of the firearm.   


  • 416R Pre- hardened chromium stainless steel for peak accuracy potential through service life
  • Compatible with Glock® model G43 and G43X
  • 9mm SAAMI-spec chamber
  • Black Nitride finish resists surface wear & corrosion while providing increased surface hardness
  • ½"-28 threaded muzzle for suppressor or accessory support
  • Target crowned muzzle
  • Honed and polished chambers to ensure reliable function across a broad range of ammo
  • Broach cut rifling for reduced stress and uniformity of the bore 
  • All critical machining done in single work holding for exacting tolerances and manufacturing consistency from batch to batch. 
  • 1:10 twist rate
  • Overall length : 3.910" / with comp : 4.17"
  • Micro Carry Comp torqued to 8ft/lbs

GLOCK” is a federally registered trademark of Glock, Inc. and is one of many trademarks owned by Glock, Inc. or Glock Ges.m.b.H.  Griffin Armament is an independent manufacturer of parts and accessories that fit Glock® pistols, however it is not affiliated with or endorsed by Glock, Inc. or Glock Ges.m.b.H.  The use of Glock on this page is merely to advertise the sale of compatible parts or components.  

Additional Details

Glock 43
Thread Pitch:
Type Of Part:


12 Reviews

  • 5

    Published by Rob N on 25th May 2020

    Just drop it in and go. Perfect fit and function.

  • 5
    Micro Carry Comp and Barrel

    Published by Ian W. on 9th May 2020

    Barrel drops in and locks up tight, compensator provides noticeable reduction in recoil with negligible bulk added for comfortable EDC inside the waistband. Great product.

  • 5
    It does noticeably work

    Published by Stephen on 8th May 2020

    It does make a difference I think do to what it is, but also the added weight of extra barrel length and comp, the only thing I would change I’d want to comp to fit a little tighter to front of slide, it would look that much better, but I still like it.

  • 5

    Published by Clayton on 8th Feb 2020

    I run this on a 43x with the DPM recoil spring. It shoots everything from target ammo, to the fairly snappy, Federal 124+P HST, with 100% reliability. My POI shifted minimally and it seems as accurate if not more so than the factory barrel. The comp really takes the bite out of this little gun.

  • 5
    Barrel and Micro Carry Comp

    Published by Joe on 21st Dec 2019

    Very fast shipping!!!!
    Easy install literally minutes to install!!!
    Have not tried it out yet but I'm sure it will be fine!!!!
    Thanks Joe

  • 5
    Punches above its weight

    Published by Joe on 13th Dec 2019

    I didn't think this tiny thing--barely bigger than a thread protector--would do much of anything. However, as all of the youtuber reviewers I watched said, it definitely DOES make a difference. To me, it reduced overall recoil about 20% and that softer recoil impulse allowed me to keep the gun from rising about 20% better than normal (tracking my red dot was easier). Function was 100% with all ammo (115gr, 124gr, and 147gr). It really does punch above its weight for what it is...the fact that it makes a noticeable difference while being the size of a thread protector is pretty cool.
    Because of the increase in sound and blast, I'd like to give it 4-stars, but that would be unfair, since all comps increase sound/blast.

  • 4
    G43 Threaded Barrel w/Micro Comp

    Published by Van on 7th Nov 2019

    Barrel is great and functioned well. The micro compensator did make a difference in reduced muzzle rise but it should have a set screw. I put a little lock tight on it because it did loosen up after a few rounds.

  • 5
    Griffin ATM with Micro Carry Comp

    Published by D. Ramiro on 31st Jul 2019

    The thing that I love about this barrel and compensator is that it is low profile enough to conceal carry and the reduction in recoil that I get for follow up shots is amazing! Thank you Griffin Armament!

  • 5
    I would have given it 10 Stars if I could

    Published by Bradley on 30th Jul 2019

    I put about 300 rounds through the barrel and not only does it look amazing, but it also performs exactly how it looks... Perfect!!

  • 5
    Top quality, looks great

    Published by Chad Wilcox on 13th May 2019

    You need to make one for the Glock 42

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