Guardian ATS Sight:

Designed as a back-up to the main optic and awkward shooting positions, our Guardian back-up sight kit includes:

• 5 differently colored front sights
• 5 differently colored rear sight inserts
• .044" of elevation shim
  (pink = .015", clear = .008", tan = .004", red = .002")
• Front sight, rear sight, mount and clamp set screw hex keys

As a base-line with our Guardian sight, start out without any shims. All picatinny rails and how they are mounted and their relationship to the bore are not the same. Approximately, each increment of .002" to .0025" of elevation shim will affect bullet impact by 1" at 25 yards. With the tools provided with each sight kit, most will be able to install our Guardian sights without professional help.