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GM-M17 20" 5.56mm M16 A2 A/R Barrel, 1:7 twist

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Product Description

5.56mm 20" Barrel, 1:7 twist, 41V50 mil steel, weighs 2.05 lbs, M16 A2 , fully machined and assembled with M4 extension, chrome line bore and chamber, drilled gas port, phosphate finish, rifle length gas block, 1/2x28" muzzle threading, button rifled, air gauged, and stress relieved.

Barrel is not pinned for front site.

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

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Product Reviews

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  1. can't miss 5 Star Review

    Posted by on 18th Apr 2016

    Once you get this thing zeroed in, theres nothing you cant reach out and touch with a nice 77 grain bullet.

  2. it shoots.. 4 Star Review

    Posted by on 11th Apr 2016

    this barrel shoots well. machine work is excellent from green moumtain...please see my other review in the 416r stainless 223 wylde gm-m18.. it contains more info of this barrel also...55 grain & 77 grain loads....lights out.. however, i would not run this barrel full auto.. just my opinion ...it tends to drift / droop a bit after a quick 5 shots.

  3. great barrel! 5 Star Review

    Posted by on 10th Apr 2016

    Barrel was shipped fast. Great packaging and looked good out of box. Gas block fit good. Installed a Vortex scope and gave it a fast sight in with a poor rest at 50 yds. 3 shots touching with cheap ammo. I would match this with a barrel that cost 4 times as much! If you need a barrel order this one.

  4. Can't say enough about this barrel 5 Star Review

    Posted by on 29th Mar 2016

    Just built my rifle and under first 75 rounds and shooting under 1 in size groups @ 100 yards.
    Thank you Green mountain for a dream come true.

  5. Great Barrel, just what I wanted! 5 Star Review

    Posted by on 29th Mar 2016

    The shipping was great, shot 30 rounds at about 30 yards with open sights with a quarter sized group. I think it shoots better than I do and will order again.

Previous | Showing reviews 6-10 of 38 | Next