The most common mistake when buying a Cerakote AR15 buffer tube is prioritizing aesthetics over specification. Buyers focus on color-matching their FDE handguard while ignoring whether the tube is mil-spec or commercial-spec diameter — a mismatch that makes your stock incompatible regardless of how good the Cerakote looks. Get the specs right first. Match the finish second. Why This Purchase Matters More Than Most Shooters Realize The buffer tube is the operational heart of y