This was used specifically on the FlaK 30 and FlaK 38 Anti-Aircraft Cannons! The Flak 30 (Flugzeugabwehrkanone 30) and improved Flak 38 were 20 mm anti-aircraft guns used by various German forces throughout World War II.
It was not only the primary German light anti-aircraft gun but by far the most numerously produced German artillery piece throughout the war. It was produced in a variety of models, notably the Flakvierling 38 which combined four Flak 38 auto cannons onto a single carriage. Made of aluminum and steel.
This anti-aircraft reflector gunsight is in EXCELLENT condition for the age! Some marks, scratches and wear, however it still retains 95% of the original KRIEGSMARINE paint! No major damage, though the Clear reflector glass has some chips (both are easy replacements). The optics are SUPERB, and I have shown an image of the reticle in the last images. Some rust of the bare steel parts.Also features the KM Adler. One of the NICEST ones I have ever seen of it's type, it is an EXCELLENT sight that would make a PERFECT addition to any collection or display!