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The description says "Nickel Boron" finish. Two questions. What, exactly is NiB treated? Is the feed ramp NiB treated? — 1 Answer

by GeeDeeBird, from NM, United States Asked on February 24, 2022

Name Rosco Manufacturing Purebred .300 AAC Blackout Barrel (5)
As Low As $169.20 Save 10%
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Answered by Hunter, Gear Expert, from OH, United States, on March 14, 2022

This is what the manufacturer says in regards to their NiB treatment. "The polished Nickel Boron will aid in corrosion resistance, surface hardness, and increased lubricity. I.E. Meticulous manufacturing leads to a precision instrument." Yes, the feed ramps on the Rosco Manufacturing Purebred .300 AAC Blackout Barrel are NiB treated.

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