[ARCHIVED THREAD] - barrel diameter question

Posted: 4/4/2009 9:24:32 PM EDT

I have a 16 inch 9mm barrel. I got it used and just took off the freefloat and put on a shorter one. I now have a visible area on the barrel where the ironsight used to be. It looks like the sight just sat up next to a flared out part of the barrel. I dont have the iron sight nor do I want it. So to cover that area up I was thinking of putting a railed gas block on it. I dont know what size to get. I measured out the circumfrence of that barrel section and it is 2.5 inches. Any help would be greatly appreciated.

Thanks

Posted: 4/6/2009 6:38:30 AM EDT

[#1]

You need the diameter, not circumference.

Most barrels these days measure .750" at the gas block, however if your barrel is a Colt than it will measure .625".

Posted: 4/6/2009 8:48:18 AM EDT

[#2]

Its a RRA barrel. My friend just brought over his gauge and its a .750 on that spot. Thanks for your help.

Posted: 4/6/2009 8:59:09 AM EDT

[#3]

You could also just get a longer rail and cover up the thing that way.

Posted: 4/6/2009 12:54:53 PM EDT

[#4]

That 2.5" circumference comes out to be about 0.80", which isn't terribly common... It may require a custom block.

[ARCHIVED THREAD] - barrel diameter question

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[ARCHIVED THREAD] - barrel diameter question

[ARCHIVED THREAD] - barrel diameter question