Mid URX build with Mid gas system

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JohnnyO
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Mid URX build with Mid gas system

Post by JohnnyO » Wed Mar 10, 2010 1:08 am

Yes, it can be done.

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Image Now I just have to wait for KAC to have a T1 and mount deal.

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mcmillanman5
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Post by mcmillanman5 » Wed Mar 10, 2010 1:19 am

How long is that bbl? 12.5"?

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JohnnyO
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Post by JohnnyO » Wed Mar 10, 2010 7:26 pm

12.75"

surfish95747
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Re: Mid URX build with Mid gas system

Post by surfish95747 » Thu Jan 05, 2012 12:47 am

Very interesting. I want to do the same thing when I get my URX middy. What exactly did you have to modify. It looks like you had to shave a bit off the top of the gas block? Did you do anything to the rail itself? Awesome pictures thanks!

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JohnnyO
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Re: Mid URX build with Mid gas system

Post by JohnnyO » Thu Jan 05, 2012 1:38 am

[quote="surfish95747"]Very interesting. I want to do the same thing when I get my URX middy. What exactly did you have to modify. It looks like you had to shave a bit off the top of the gas block? Did you do anything to the rail itself? Awesome pictures

Yes, In the first pic you can see I used a ball mill to make that channel a little deeper in the rail.
The rest of the work was done to the gas block to make it fit with some clearance.

Also this was done to a regular mid gas barrel not a KAC mid gas barrel.

Tom12.7
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Re: Mid URX build with Mid gas system

Post by Tom12.7 » Thu Jan 05, 2012 1:51 am

I haven't done a regular mid length gas barrel shorter than 13.5"ish. Really curious about how well that combo works.
Tom

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JohnnyC
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Re: Mid URX build with Mid gas system

Post by JohnnyC » Thu Jan 05, 2012 5:38 am

Tom12.7 wrote:I haven't done a regular mid length gas barrel shorter than 13.5"ish. Really curious about how well that combo works.
Tom
Echo this.

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JohnnyO
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Re: Mid URX build with Mid gas system

Post by JohnnyO » Fri Jan 06, 2012 1:03 am

It has run without a hiccup. The only issues I've had were ammo related ( Olympic ).

Tom12.7
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Re: Mid URX build with Mid gas system

Post by Tom12.7 » Fri Jan 06, 2012 2:16 am

That's good to hear. What's the rest of your setup? Buffer, ammo, etc? Kind of curious. I've run some rifle gassed uppers suppressed only with minimal barrel between the gas port and the can. All bets were off without a can on it.
Tom

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JohnnyO
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Re: Mid URX build with Mid gas system

Post by JohnnyO » Fri Jan 06, 2012 12:36 pm

I use this setup for 3gun and my general goto gun. Buffer is a lightweight carbine buffer, ammo is Federal M193, Winchester Q3131a and practice/pinker ammo is Greek Olympic stuff (not reliable). I was told by someone who had done a few mid gas sbr's to open up the gas port a couple thousandths if i had cycling problems without the can on, but i haven't had to do that.

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