Talley Fierce Picatinny Rails are machined entirely from high grade 7000 series alloy and protected with a hard-coat anodizing to 65 Rockwell ensuring the craftsmanship of these Picatinny Rails last the lifetime of your firearm. The Fierce Picatinny Rail is designed and manufactured with precision to fit your Fierce Edge or Fury with the industry’s tightest manufacturing tolerances.