In the design of military optical systems there frequently exist conflicts among requirements for high performance or precision, size and weight, and the ability to withstand harsh environments. The Mini Laser Rangefinder, a second-generation production system designed for the Army, accurately measures and displays the distance to battlefield targets. Designed to fit in a field jacket pocket, it is half the weight and 60 percent smaller than its predecessor, the AN/GVS-5. The Mini Laser Rangefinder was designed for complete interchangeability of modules without realignment or readjustment. It was designed to minimize production costs by eliminating unnecessary parts and precision interfaces, by incorporating a simpler, more easily made optical system and by using precision plastic molded parts wherever possible. This paper describes the design evolution, performances and packaging/material innovations of this new production laser rangefinder.