RMR Red Dot Sight Scope Mount

I am listing this item because I do not have plans to use it.

I do not know which manufacturers are compatible, so please judge from the photos and purchase if you are able to make adjustments yourself.

I am listing items from my collection hobby.
In past transactions, there have been buyers who purchased without reading the product description carefully and then left complaints in their transaction reviews.

As these are used items, I kindly ask that only those who can repair or DIY purchase them.

Please comment if there is anything you are concerned about.