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GM-M27 16" 300 BLACKOUT

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Product Description

16" 300 BLACKOUT, 1:7 Twist, carbine length,  Chrome bore and chamber, phosphate exterior, made of 4150 steel, 7 flute, 5/8x24 muzzle threads. Not pinned for front site base.

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Product Reviews

Previous | Showing reviews 6-10 of 31 | Next

  1. Nice accurate barrel 5 Star Review

    Posted by on 26th May 2016

    Looks great and functions flawlessly, sub moa groups at 100 yards,wish they would have included low profile gas block that works with the pre-drilled pin hole, could not find a pinned gas block that would line up properly with pre-drilled hole, finally found guntec low profile steel(3 set screw short) gas block that the center screw lined up perfectly with drilled pin hole, At least a recommended gas block would be helpful

  2. Great barrel, headspaced right. 5 Star Review

    Posted by on 27th Apr 2016

    Barrels were received fast, and when assembled, worked perfectly. No problems.

  3. very good 5 Star Review

    Posted by on 14th Mar 2016

    Barrel looks good and shoots good. No complaints.

  4. Excellent quality at a great price! 5 Star Review

    Posted by on 19th Feb 2016

    Bought this for my first 300 Blackout build and was very pleasantly surprised! Great fit, head space is perfect and cant wait to shoot it! Only thing about it I was not crazy about is the kind of gas block it was designed to work with is not exactly super popular and I had to hunt one down. I would rather it just been a dimpled barrel on the underside so you can use more popular gas blocks instead. But this was minor. Would buy again!!

  5. concistency 5 Star Review

    Posted by on 17th Dec 2015

    Like all the GM barrels prior no issues, great finish and flutes. Headspace was spot on with SRC Bolt. No accuracy testing yet. Great barrels consistent quality highly accurate American made. Thanks Green Mountain

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