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If you've heard about Nickel Boron Bolt Carrier Groups and wondered what all the fuss was about, you've come to the right place!What are the advantages of a Nickel Boron BCG?Are they worth the money?Do I need one in my AR15 or my AR Pistol?Below are the top 3 reasons your AR15 might need one. Reason #1 - Reliability Of all AR15 parts, the bolt carrier group is without a doubt the most critical component for proper functioning. It is not only the most complicated component but also the hard …

Above: AR15 BCG finishes (l-r) Toolcraft Titanium Nitride, BCM BCG with Robar NP3+, Toolcraft Nickel Boron, Toolcraft Black Nitride, Colt BCG refinished in Chrome with Nickel Boron Gas Key, Toolcraft Diamond Like Carbon (DLC) Finish, Toolcraft Chrome Phosphate There's a vast number of finishes available for AR-15 bolt carrier groups (BCGs) today. I don't mind paying more for more performance, but I don't like to waste my money on gimmicks either.  Let's sort through some of …