When Garrett, from Alex Pro Firearms asked Cold Dead Hands to do a review on their Nickel Boron Bolt Carrier Group, I said to myself; “Sure, why not? I’ve heard a lot of hype over the NiB (nickel boron) plating, but never actually tested one.” Let’s face it, if you’re like me, who wouldn’t want something that makes clean up easier? Just ask my ex’s… I hate cleaning and sure enough, a NiB plated bolt carrier makes clean up a breeze.
Now before I get into the details of the review and the “praise” this company and their BCG will inevitably receive, I’d like to take a minute or two to explain some of the details regarding Nickel Boron plating.
Nickel Boron coatings are columnar in growth resulting in a distinct nodular topography which serves to reduce surface to surface contact of two mating / sliding surfaces reducing drag / friction. The nodular structure dissipates heat at greater efficiency due to greater surface area. Simply put; it needs less lubrication to slide more efficiently.