I've been looking to make a Mk12 mod 1-esque type upper (aka longer barrel with quad rail) for some longer distance shooting. I've been recommended White Oak Armory barrels, but they're out everywhere. Any other barrels you guys might recommend? Also how much performance would I gain going from 16" to 18" or 20"?
.223 barrel selection for AR
- Thread starter kjeff91
- Start date
https://www.brownells.com/rifle-par...15-m16-223-wylde-match-barrels-prod54526.aspx
Brownells has them. My WOA 18" is about 50 fps faster than my WOA 16" with 77gr OTM. Stands to reason that a 20" is about 100 fps faster than a 16" but at the penalty of more weight and overall length. 18" is a good middle ground.
I have also had good experience with Rainier Arms and Seekins. For some extra money it might be worth it to check out Compass Lake.
The 18 in wild is not drilled for a gas port the only other they have is the light weight 3 gun barrel
If I knew how to drill a gas port I would have taken the 18 inch PSR
As it is I'm waiting the 8 weeks
Dennis
If I knew how to drill a gas port I would have taken the 18 inch PSR
As it is I'm waiting the 8 weeks
Dennis
Be very careful with a Mk12 barrel. We did some testing with a number of barrels (many name brands) which profess to be either Mk12 or SPR, but will not support an AEM-5 suppressor. If you don't care about running suppressed, then many barrels will aceept the Allen collar and brake.
If you are looking at something that like a Mod1, then you will want an 18" or 20" barrel. The 18" is a little hot, and will cause some early gas erosion, but the original Mk12 Mod1 was an 18" Douglas SS barrel, and those have held up well. I remember visiting Frank White in his shop at Compass Lake a number of years ago, and he commented on how he sees early gas port erosion on every barrel except the Douglas. He did not have a good explanation. We guessed maybe it was the steel Douglas uses.
If you do not care about historical accuracy, and weight is not an issue, I think 20" is worth considering. You get a more natural "dwell" with a rifle length gas system at 20".
Here is a list of Mk12 barrels we have tested and offer as a kit- barrel and AEM collar / brake. There is a little bit of the case study we did, so a little more than a link to sell. Mk12 is one of our specialities, so we take it very seriously, and have worked hard with some of the better barrelsmiths and also with Allen Enginnering to find the best solutions to baffle strikes on the suppressor.
If you are looking at something that like a Mod1, then you will want an 18" or 20" barrel. The 18" is a little hot, and will cause some early gas erosion, but the original Mk12 Mod1 was an 18" Douglas SS barrel, and those have held up well. I remember visiting Frank White in his shop at Compass Lake a number of years ago, and he commented on how he sees early gas port erosion on every barrel except the Douglas. He did not have a good explanation. We guessed maybe it was the steel Douglas uses.
If you do not care about historical accuracy, and weight is not an issue, I think 20" is worth considering. You get a more natural "dwell" with a rifle length gas system at 20".
Here is a list of Mk12 barrels we have tested and offer as a kit- barrel and AEM collar / brake. There is a little bit of the case study we did, so a little more than a link to sell. Mk12 is one of our specialities, so we take it very seriously, and have worked hard with some of the better barrelsmiths and also with Allen Enginnering to find the best solutions to baffle strikes on the suppressor.
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