Griffin ATM™ Barrel - Fits Glock® G17 Gen 3/4 - Threaded 1/2x28 - With Micro Carry Comp

Now: $195.95
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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 G17 Gen 3/4
  • 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 : 5" / with comp : 5.26"
  • 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 17
Type Of Part:
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4 Reviews

  • 5
    G17 G4

    Published by Mister E on 21st Jan 2020

    Best upgrade yet! I will recommend this to everyone. 30% recoil reduction for a comp this small is impressive. I’m not a gunsmith, so there’s probably better options....but I put some loctite on it to keep from getting loose.

  • 5
    barrel and comp range review

    Published by greg (aka:chuck wagon) on 16th Nov 2019

    The fit and finish was very good. I paired this barrel with a delta point pro. Accuracy was excellent. Even at 100 yards i was hitting steel silhouettes with consistency. Ran 450 rounds of mixed ammo, from 115 fmj, 115 +p to 147 hp. Not one failure to feed or extract. As for the comp, it did function some. Had zero issues holstering gun with comp on. Overall this is a really good functioning combo. Wish you made them 34 models.

  • 5
    Perfect upgrade for my g17

    Published by Unknown on 21st Oct 2019

    Love that this setup doesnt add a ton of bulk. Need to put more rounds down range over time but initial range sessions have me impressed.

  • 4

    Published by Gavin on 7th Jan 2019

    A little pricey if you dont need the comp. That being said it was actually sick when I shot it. I bought the barrel for my resistance 9 silencer but now im buying another barrel kit and comp for my G19. Thanks for making a product I didnt even know i needed :) haha

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