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GM-M52 223WYLDE Fluted, Black Passivated Barrel

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Product Description

223 WYLDE, 1:8 twist, 18" long, .750" gas block diameter, 1/2 x 28" muzzle threading, 416R stainless steel, weighs 2.1 lbs., honed, Fluted, Black Passivated finish, bead blasted matte finish, Nickel Boron extension with M4 feed ramps, and has a rifle length gas block. Button rifled, air gauged, stress relieved.

Barrel is not pinned for front site. 


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Product Reviews

  1. Whoever said piston ARs are inaccurate never built one with a GM barrel! 5 Star Review

    Posted by on 9th Dec 2018

    Built with a Superlative Arms gas piston kit . Was shooting nothing special plinking ammo, progressive loaded cheap 62 grain projectiles with CFE223 powder. At 100 yards, it shot six consecutive (no cool-down between) 5-shot groups ranging from .591" to .628" @ 100 yards. Also did one 10-shot group @ 1.253", immediately after those previous 6 groups, quite respectable for a rather hot barrel. Was using a bipod, rear bag and 10x optic. Bottom line, all my Green Mountain barrels (3 now) have either met or exceeded my expectations regardless if they were use in GP or DI systems. Great barrels and a great value!

  2. As Promised 5 Star Review

    Posted by on 13th Jun 2018

    I can't attest to the performance of the barrel as of yet. But if this barrel shoots as good as it looks, then I should be all set.

  3. early results are quite promising 5 Star Review

    Posted by on 3rd Jun 2018

    After an initial break in, shots 32 through 42 out of this barrel went into 1.25 moa. That was with accurate hand loads but not tuned for this rifle. I'm looking forward to a tuned load.

    Also of note, the break in was the most obvious of any barrel I've ever broken in. I could tell the difference between almost every cleaning. I would definitely recommend breaking following a break in procedure with this barrel.