So I emailed EGW asking info about the rail and this is what they sent.
Hello

that is a 0 moa Savage Short action rail.
Made from 6061 aluninum t6 and andoized.
all US.

if you go to 20 moa.
I recomend the HD rail, machined from 7075 full cross slots, sturdier, hard coat anodized.
come with torx screws.