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GM-M27 16" 300 BLACKOUT

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Product Description

300 BLACKOUT, 1:7 Twist, 16" long, 4150 steel, weighs 1.75 lbs., carbine length, button rifled, air gauged, stress relieved, chrome line bore and chamber, phosphate finish, 7 flute, 5/8x24 muzzle threads.

Barrel not pinned for front site base.

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Product Reviews

Showing reviews 1-5 of 33 | Next

  1. As always, very happy 5 Star Review

    Posted by on 26th Sep 2017

    Great barrel. Well made. Do miss the gas block pin hole for anchoring the has block. Now that I know which lo-pro gas block to use. I did pin my other 300 bk barrel.

  2. SUB MOA 5 Star Review

    Posted by on 30th May 2017

    I own two if these barrels. Both sub MOA with Hornady 125gr SST bullets and H110. I recommend these to all my friends. Note , clean the barrel good before you shoot it the first time. A lot of production poop in the bore. Green Mountain Barrels in 18" 556 have been outstanding for the price for me also.

  3. gmrifle 5 Star Review

    Posted by on 10th Oct 2016

    Barrel looks nice, great machining done to it., shoots good fit my upper reciever perfect

  4. Very nice barrel. 4 Star Review

    Posted by on 3rd Oct 2016

    I got two of these,one for me and one for my brother.Great look and fit just one problem.We had to open the gas port to make our blackout work. And yes we used several different kinds of ammo first with no luck.I drilled mine first and it runs great.Gas port needs to be as big as inside of gas tube.

  5. great barrels 4 Star Review

    Posted by on 5th Sep 2016

    Great barrels wish you made 308 barrels.

Showing reviews 1-5 of 33 | Next