.22 LR dedicated upper

[Big-chuck]

Hi Guys I just purchased a 7" .22 LR Barrel to build a dedicated upper the barrel is CMMG style it has a mail end adapter , I am trying to figure out where I can purchase the correct BCG to make this all work
I found this picture on the net that is type of male end I am taking about my barrel looks like a 7" standard SS SBR profile
C

[rmtokubo1]

cheaper than dirt, if you buy the CMMG conversion bolt you can also buy the replacement collar OR you can go to the CMMGINC.com website and buy the bolt specific to the CMMG 22lr barrels.