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GM-M19 , 14.5" 5.56x45mm 1:7 Twist


Product Description

  • Caliber- 5.56x45mm
  • Twist Rate- 1:7
  • Length- 14.5"
  • Profile- Government (Under "See 1 more picture" there is a detailed drawing of this barrel.)
  • Chrome Line Phosphate
  • Gas System Length- Mid
  • Gas Block OD- .750+-(.001)
  • Steel Type- 4150
  • Thread Pitch- 1/2x28
  • Weight- 1.75lbs

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Product Reviews

Showing reviews 1-5 of 6 | Next

  1. Great barrel for my T91 Piston build 5 Star Review

    Posted by on 18th Jun 2019

    I used this barrel for my T91 build.(Short stoke gas piston with non free float handguard)
    With my hand loads, it shoots around 1.5 MOA.
    Best group was 1.14 MOA.
    So happy with this barrel.

  2. Great barrel 5 Star Review

    Posted by on 21st Dec 2016

    I wanted an AR for a truck-gun that was short that did not require another NFA stamp to keep track of and didn't require permission to take across state lines from the ATF. After it was tested on one of my SBR lowers I pinned one of my QD suppressor mounts on to give it a 16+" overall length then topped it off with an Aimpoint M4 optic. Thanks GM it's the 3rd barrel I've used in a build but not the last.

  3. Outstanding barrel 5 Star Review

    Posted by on 2nd May 2016

    I used this barrel for a recent build. Fit and finish was perfect and I was able to get sub MOA with cheap factor ammo! I highly recommend this barrel. Green Mountain is now my go to barrel company!

  4. Best buy for the money 5 Star Review

    Posted by on 10th Mar 2016

    This barrel with the Smith Enterprise muzzle brake permanently attached Is the best grouping[carbine I own with 62 gr & 72gr. ammo both commercial and hand loads. Perfect quality and finish for the money , but that's what you get with GMB products , Thank you, Randy T,

  5. Quality product and finish 5 Star Review

    Posted by on 29th Jan 2016

    I purchased two of theses barrels and installed them with no issues. The finish is very nice, bore is nice and bright, and most of all they shoot great.

Showing reviews 1-5 of 6 | Next