Gen is short for "Generation". Gen 1 scopes were originally developed for military application during the 1960's, primarily for use in Viet Nam.

Gen 2 scopes were developed through the '80s. They added something new called a micro-channel plate that significantly boosted their sensitivity. In addition to doubling the system light amplification the new Gen2 scopes had 50% better viewing clarity - when you hear night vision wonks talk about "resolution" this is what they're talking about.

Gen3 scopes represent our most current technology. In addition to the micro channel plates found on Gen2 units, Gen3 devices upped the ante once again with the addition of something called a Gallinium Arsenide (GaAs) photo cathode. Use of this exotic element results in the best performance specifications - put bluntly, they really do turn night into day.

Gen 3 night vision equipment also offers the greatest depth of features, including intuitive operating controls, fully automated image tube protection, rapid flash recovery capability and numerous on-screen indicators. As an export controlled product, Gen 3 night vision products are generally restricted to sale within the United States.