Albroswift Posted August 17, 2021 Report Share Posted August 17, 2021 Hello, All Can't get out to the shop and check right now, anyone know off the top of their head what the difference from centerline is between 308 and 223 gas tube hole in receiver? Thanks-- Al Quote Link to comment Share on other sites More sharing options...
98Z5V Posted August 18, 2021 Report Share Posted August 18, 2021 I don't have the direct number, but a pic. I can pull out some gas tubes and set this up, and measure that, if you need it. Quote Link to comment Share on other sites More sharing options...
msgriff Posted August 18, 2021 Report Share Posted August 18, 2021 I believe these are the dimensions you're asking for: Quote Link to comment Share on other sites More sharing options...
98Z5V Posted August 18, 2021 Report Share Posted August 18, 2021 ^^^ That's it right there. 0.783" centerline on an AR15, to 0.845" centerline on the .308AR platform. Well done, man. Quote Link to comment Share on other sites More sharing options...
Albroswift Posted August 19, 2021 Author Report Share Posted August 19, 2021 Thanks, @msgriff Exactly what I wanted. Kinda funny that some the most commonly built guns have no drawings online of the uppers. Quote Link to comment Share on other sites More sharing options...
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