TFB’s optics guru Timothy Yan recently visited the Alexander Arms facility. He writes …

Temperature and recoil endurance testing of the optic by Alexander Arms. This featuring two of the new Hi-Lux Leatherwood Micro-Max B-Bot mini red-dot sights. The testing rifle is a special short barrel version of the Alexander Arms Ulfberth semi-automatic .338 Lapua Magnum rifle.

The optics and the rifle were frozen for 12 hours at -65° Celsius/-85° Fahrenheit in the cryo-chamber in the Alexander Arms testing facility. After the low temperature test, the gun and optics combo were heated up to +180° Celsius/356° Fahrenheit for the high temperature test. According to Bill Alexander, this high and low temperature range far exceeded what the US military and NATO use in testing their milspec optic. A certain red-dot sight in use by the US military is known to fail at around -30° to -40° Celsius.

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