[ARCHIVED THREAD] - question about buffer tubes

Posted: 12/14/2008 1:51:22 AM EDT

how do i know if mine is milspec or commercial. it is on an armalite, but i dont think it is original. is there a measurement i can take?

Posted: 12/14/2008 2:07:38 AM EDT

[#1]

http://www.magpul.com/tech/ctr.html

Posted: 12/14/2008 2:10:16 AM EDT

[#2]

Mil Spec

7075T-6 forged aluminum

7.25" Long

1.14" OD

.073" Outer wall thickness

Squared End

Commercial

6061T-6 extruded aluminum

7.8" Long

1.17" OD

.085" Outer wall thickness

Tapered End

Posted: 12/14/2008 5:09:17 AM EDT

[#3]

I have a related question then. Will a mil-spec and comercial tube both thread into the buffer tower of any receiver or is it similar to the old "Colt large pin vs. small pin" thing?

Posted: 12/14/2008 5:54:24 AM EDT

[#4]

They both fit the threads in a receiver.

[ARCHIVED THREAD] - question about buffer tubes

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[ARCHIVED THREAD] - question about buffer tubes

[ARCHIVED THREAD] - question about buffer tubes