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Is this a HBAR barrel or M4 profile? — 1 Answer
by Badtrevor, from OR, United States Asked on November 11, 2021
This barrel is machined from 4150 Chrome Moly Steel, heat treated to RC 28-32 hardness, and properly stress relieved. This barrel has a nitride finish for increased strength and durability. It is chambered 7.62×39 chamber, with a 1:10 twist rate. CBC Industries does not specify if it uses an HBAR or M4 profile barrel, you can reach out to them directly for more information. You can find their contact info below:
https://www.cbcpfa.com/about-cbc/