What is the HGU4/P? - Randolph Engineering

Updated: May 9, 2023

What is the HGU4/P Military Aviator?

We wanted to make a difference. Leave a mark. Be proud of something.

So in 1978, we joined forces with the U.S. military to produce the HGU-4/P Aviator for fighter pilots. Each Aviator is still built to the strict guidelines of MIL-S-25948J standards, a 20-page document detailing the most demanding, complex manufacturing specs around. The HGU4/P was officially recommended by army optometrists in November, 1958.

The HGU4/P Aviator sunglass design was adopted because it worked better with newer helmet designs, which had undergone major developments in the 1950s. Flight helmets were now being made with plastics, and equipped with communication equipment and oxygen masks. These helmets required a sleeker sunglasses design that could fit under the new wind blast visors with the additional equipment.

The HGU4/P is still the standard aviator sunglass specification that Randolph Engineering is under contract to produce for the U.S. Military. Randolph recently renewed their contract with the U.S. military to continue producing the HGU4/P for another five years.


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Sunglasses Built to a Higher Standard in the USA.

Every frame we handcraft at Randolph is built to the same high military standards, whether it's produced specially for the military or for our loyal customers. We hold ourselves, and our product, to a higher standard, because we care.

Did you know? It takes 50 of our artisan engineers over 6 weeks and 200 steps to craft a single frame? It's not quick, it's quality. For this reason our solder joints are guaranteed for life. Learn more about how our frames are made in the USA.

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