Loading... Please wait...

Like Us on Facebook!


Add to Wish List

Click the button below to add the GM-M6 Fluted 16" 5.56mm A/R Barrel w/ extension to your wish list.

You Recently Viewed...

GM-M6 Fluted 16" 5.56mm A/R Barrel w/ extension

Calculated at checkout

Product Description

5.56mm,1:7 twist, 16" Fluted AR Barrel, 4150 milspec steel, Phosphate finish, Chrome line bore and chamber, button rifled, stress relieved, air gauged, muzzle threaded 1/2 - 28 .750 gas block with drilled gas port, extension with m4 feed ramps, weighs 1.75 lbs, and has a cabine length gas block. 

Barrel is not pinned for front site.

Under "See 1 more picture" there is a detailed drawing of this barrel.

Write your own product review

Product Reviews

Previous | Showing reviews 6-10 of 24 | Next

  1. Best Lite barrel I have used on a Ultra Lite AR custom build 5 Star Review

    Posted by on 6th Sep 2016

    I have built dozens of custom ARs for many customers. When they want the lightest 16" I use this barrel. They all have shot 5 shots in less than 1 inch at 100 yards with the right ammo.

  2. Excellent 5 Star Review

    Posted by on 20th Aug 2016

    Suprised at how light the barrel was. Very precise machine work.

  3. Another Great Barrel 5 Star Review

    Posted by on 30th Mar 2016

    I have used several of these barrels, second to none. Quality, appearance and accuracy are what I always get from Green Mountain. Not to mention their service. I have purchased and used several versions of their AR style barrels, my favorite being the fluted 16" ones.

  4. Super Service 5 Star Review

    Posted by on 7th Mar 2016

    I can only give four stars as of now because I have yet to fire the rifle that the barrel is installed on. That being said the barrel looks to be of exceptional quality including the flutes.The best thing to say is that in this time of waiting for weeks for almost any AR parts my GM barrel was shipped the very next day and to another vendor that drilled and pinned it with a gas block. So with the good service that rates one more star.

  5. fluted 16'' 1 in 7 M4 barrel 5 Star Review

    Posted by on 14th Nov 2015

    this is an awesome barrel and i could not be happier with it. finally was able to follow the break in procedure and get to shoot it. very accurate for a chrome lined barrel. very well made, finish is a beautiful matte black evenly coated and flutes are perfect and very uniform and my A2 birdcage flash hider center vent (or port) lined up perfect with the top flute in the barrel(made it easy to center the flash hider) and the big plus was getting the barrel on sale for about half price. my only regret is i didn't buy more ;^)

Previous | Showing reviews 6-10 of 24 | Next