Loading... Please wait...

Like Us on Facebook!


Add to Wish List

Click the button below to add the GM-B4 21" .223 Wylde Gunsmith Edition to your wish list.

You Recently Viewed...

GM-B4 21" .223 Wylde Gunsmith Edition

Calculated at checkout

Product Description

.223 Wylde, 1:7 twist, 21" long,  416 stainless steel, weighs 3.5 lbs., nickel boron extension, chambered, raw finish.  The barrel is air gauged, stress relieved, and button rifled. 

Write your own product review

Product Reviews

Showing reviews 1-5 of 13 | Next

  1. Took some time to get range time 5 Star Review

    Posted by on 27th Mar 2017

    Put this together with no gas port. Single shot.
    Shows great promise with factory 55 gr.
    62 gr handloads showed MOA. Handload 75gr shows close to MOA. Now to turn for a gas block.

  2. Great Barrel for a Great Price! 5 Star Review

    Posted by on 10th Oct 2016

    A friend and I just picked up a couple of these barrels and we are both very impressed with the fit and finish of these barrels. We have not had a chance to put any rounds down them yet, but based on previous reviews we are very confident they will be great performers. Now if they only made these barrels in .308, 6.5 Creedmoor.....Green Mountain Rifle Barrel Co. are you guys listening? Look forward to doing business with Green Mountain Rifle Barrel Co. in the future.

  3. Great 600 Yard Barrel 5 Star Review

    Posted by on 10th Aug 2016

    This is my second of these barrels. Both will shoot 98%+ at 600 yards on an MR target. Port on the second was drilled at 0.085" and cycles fine after break in. Throat is a bit deeper than others but still groups well with up to 0.020" jump. I would certainly buy this barrel again.

  4. Very Good Barrel 5 Star Review

    Posted by on 2nd Jun 2016

    Used just the way I received it. Built a pump action AR15 to use for long range shooting. Groups very tight at 200yd.

  5. so far so good 4 Star Review

    Posted by on 14th Apr 2016

    so far so good seems to shoot very well for the money spent

Showing reviews 1-5 of 13 | Next