If you plan on using a lens with your ArmorTech sight, you will need to purchase the lens frame (sold separately from the lens) that fits the brand of lens you plan to use with your sight. The lens frame helps protecting the lens edges and helps fit the lens into the scope housing.
This product is only the 1-3/4" diameter frame which works only with the 1-3/4" size lenses, so you may want to purchase the AXAT-LF-SET item instead if you are unsure of the brand lens you will be using, if you are unsure of the lens' technical size, or if you think you may alternate lens brands in the future.
If using a lens with the ArmorTech, you will also need to purchase the ArmorTech Lens Retainer (sold separately).
