Daystate Wolverine B External Barrel O-ring size

Hello, I have a Daystate Wolverine B in .22. I saw AoA has posted this awesome video which replaces 2 types of the O-rings (two O-rings on the external barrel, and one inside of the barrel):

From the forum thread, it looks like the inner o-ring is 5mm x 1.5mm Buna-N A70:
/topic/daystate-o-rings-a-reference-for-owners/

Does anyone happen to know the two external O-rings sizes which were replaced in the video? Thanks!