Quoted:
Was wondering if this barrel is made of CMV steel?
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We specifically use Military Specification MIL-B-11595E certified steel in all our carbon steel barrels. Barrels compliant with that specification can have vanadium in them, but it is not required.
For detailed reading, the specification is available here: http://everyspec.com/MIL-SPECS/MIL-SPECS-MIL-B/MIL-B-11595E_14406/