Features:

• - For use with most AK/SVD Airsoft rifles that use standard AK/SVD style side mounts, may not fit S&T or Arcturus AKs. Your mileage may vary.
• - Confirmed working on Double Bell AK models and S&T SVD!
• - Magnification: 1x25
• - Metal construction
• - Variable brightness red dot
• - Adjustable windage and elevation
• - Rubber lens cover with retention strap included
• - Easy to install locking lever
• - Powered by AG13 button cell

Disclaimer: A bit tricky to install. Make sure lever is on "near closing" by 10 degrees minimum and adjust tension block as needed. It needs to be just right by 0.05~0.1mm. If it doesn't close all the way by remaining 5 degrees, just force it shut with a mallet or something.
Please make sure the dust cover is removed prior to install.
Please watch out for clearance of the rear sight prior to install.
When installing the dust cover back on the rifle, you may need to carefully force it back in and use a flat head screwdriver to latch the front part back to together. This is the nature of Russian optics design, deal with it. Every batch has difference tolerances in the real world!