[ARCHIVED THREAD] - Gas Block size

Posted: 12/3/2014 10:58:11 AM EDT

I am planning on using this barrel, but I have no idea what size gas block I need to get. I currently have a CMMG 300blk medium barrel and I want to take it off and put this barrel on. https://www.primaryarms.com/Radical_Firearms_16_SOCOM_Profile_Barrel_4140_Chr_p/16socom-1-7.htm

Would the gas block size be the same? How do I replace the impingement tube ( i think that's the right name....)