AR Sponsor
Posted: 3/8/2007 7:46:00 AM EDT
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I'm not sure if I need the standard gas tube or the car gas tube. My barrel is a 16" M4 barrel. My upper is a flat top, with m4 feed ramps. |
I know of at least 8 different gas tube lengths, 5 of which are listed on my gas systems page. Add to those the two special Armalite AR-10 gas tubes and the Intermediate length that falls in between rifle and mid-length. |
AR Sponsor