I have for sale 1 Meprolight M21 in excellent condition. The optic is equipped with the bullseye reticle. No batteries needed ever. Illuminated by tritium and fiber optic for day and night use. This is an israeli standard issue optic with the IDF. If you have a Tavor or plan on getting one this will be perfect for it. It has the Quick Release Spring loaded mount for any picatinny 1913 rail and can be used on any rifle. $450 is the price and comes with everything it came with and a scope coat.