AR Gas Tube Length
AR Gas Tube Length
If the gas tube on a AR measures 7.5" from the gas block to the upper reciever does this make it a carbine length?
12/17/2010 CHL
5/21/2012 non-resident CHL
5/21/2012 non-resident CHL
Re: AR Gas Tube Length
Thanks Ikd.
With that information I just added another AR to my build list. There goes another $700-$1000!

With that information I just added another AR to my build list. There goes another $700-$1000!
12/17/2010 CHL
5/21/2012 non-resident CHL
5/21/2012 non-resident CHL
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- Senior Member
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- Joined: Sun May 04, 2008 11:12 am
- Location: West Texas
Re: AR Gas Tube Length
What an excuse to build an AR! I have not heard (tried) that one yet. I can think of " I need a new AR to match my buttstock", "look at my new scope, I plan to use it on an AR to build", "look at that free float handguard I just purchased, I'm going out right now and get a bare lower reciever and start", but the gas tube length reason beats them all! Go for it.
Re: AR Gas Tube Length
After my first build I was doing some more research on various types and lengths and read that the mid-length gas systems are this and that. Since I built a carbine I now need to build a mid-length. Now I just need to figure out how to convince my wife as to why I need/want one. Then I'll have to figure out how to convince her I need/want a rifle length, SBR, AK & .308. So many options and so little funds.
12/17/2010 CHL
5/21/2012 non-resident CHL
5/21/2012 non-resident CHL
Re: AR Gas Tube Length
Need...I like that word choice.
Opportunity is missed by most people because it is dressed in overalls and looks like work. - Thomas Edison
Re: AR Gas Tube Length
I have some FCG pins on my desk I think I need to build a new AR.
Re: AR Gas Tube Length
What's a gas tube?
- piston shooter.
- piston shooter.
Opportunity is missed by most people because it is dressed in overalls and looks like work. - Thomas Edison
Re: AR Gas Tube Length
It's kinda like a piston, but it doesn't break.gigag04 wrote:What's a gas tube?
- piston shooter.

I am not a lawyer, nor have I played one on TV, nor did I stay at a Holiday Inn Express last night, nor should anything I say be taken as legal advice. If it is important that any information be accurate, do not use me as the only source.
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- Senior Member
- Posts: 1715
- Joined: Mon Nov 16, 2009 4:58 am
- Location: Harris County
Re: AR Gas Tube Length
I use that logic all the time. I once bought my brother a scope and realized I ordered the wrong one. Did I return the wrong one???? NOPE! So naturally I had a scope in my safe that needed a rifle. And thats the story of how I got my 10/22. Then there's the time I bought a boat load of AK gear without actually owning an AK....Tallinthesaddle wrote:What an excuse to build an AR! I have not heard (tried) that one yet. I can think of " I need a new AR to match my buttstock", "look at my new scope, I plan to use it on an AR to build", "look at that free float handguard I just purchased, I'm going out right now and get a bare lower reciever and start", but the gas tube length reason beats them all! Go for it.