The Fierce Picatinny Rail is designed and manufactured to fit your Fierce Edge or Fury with the industry's tightest manufacturing tolerances. The rails provide a mounting platform for all optics mounts that have been designed in accordance with the MIL-STD-1913 Pic Rail specifications, to include all Talley Picatinny scope mounts. Includes 8-40 Screws and T15 wrench.