These shades are designed for the Aimpoint Micro H-2. They are a press fit on the front shade and should be done with a smooth jawed vise to prevent damage to the shade. I recommend using Loctite 680 during the installation of the front shade only. The rear shade manufactured by Doug Hall Engineering and screws into the rear objective of the Aimpoint H-2.
NOTE: The Aimoint H-2 IS NOT INCLUDED with the purchase.