Make sure all parts are included. You should have the following:
2x mounts, Part A and Part B
4x 6-48 screws (flat head, torx drive screws)
8x M3 allen head screws
Make sure the rifle is unloaded and safe.
Remove the rear sight from your rifle.
Under the rear sight, there are 4 tapped holes in the barrel. Install the Part A half of the mount onto your rifle using the 4 torx head screws. Do not exceed 8 in-lbs! The barrel is tapered, and the mount has a matching tapered profile on the bottom. Make sure the mount is installed with the correct end forward.
Use 4 of the M3 allen head screws to install your optic on to Part B. Do not exceed 5 in-lbs! Take note that Part B is not symmetric, and can only be installed onto Part A in one direction. Make sure to install your optic the right way around.
Use the remaining 4 M3 allen head screws to install part B onto Part A. Do not exceed 5 in-lbs!
Perform a function check to make sure the rifle is safe to fire.
