1. Select the adapter (available separately) with the required diameter of
insert depending on the outer diameter of the lens of your optical riflescope
(see the Table).
2. The designation 42mm / 50mm / 56mm in the title of the adapter refers
to the optical diameter of the lens in the optical riflescope.
3. Remove the cap(16) from the 42mm adapter (19) (SKU 79171) by
turning it clockwise. To remove the cap from the 50mm (SKU 79172) or
56mm (SKU 79173) adapters, turn it anticlockwise.
4. Degreasing of the body of the optical riflescope before mounting is
recommended.
5. Mount the insert (18) onto the adapter(19) as far as it will go.
6. Move the lever (22) to the OPEN position.
7. Mount the adapter with the insert into the lens of the optical riflescope
(17).