Mounting the SPARC
The SPARC can be mounted at two heights, lower 1/3 cowitness and absolute co-witness. To mount it at lower 1/3, mount the sight as received. The optic center will be 40mm above the base surface. To mount for absolute co-witness you can remove the 3mm base shim. The optic center at absolute co-witness will be 37mm above the base surface.
To get the best results proper mounting is essential. Although not difficult, the correct steps must be followed. Your firearm will need to be equipped with a Picatinny or Weaver style rail/base.
1. Attach the SPARC to the rail/base with the adjustment control buttons facing the shooter and make sure the mount is solidly seated in the base groove. In order to prevent recoil injury, position the SPARC so you have at least four inches of eye relief.
2. Be sure the base clamp is hooked around the outside of the rail/base.
3. Press the SPARC downward and forward toward the muzzle. Then, firmly tighten the base clamp bolt using the hex wrench.