I don't know if you really can get measurements by "naturally" relected laser. But even when: You would never know from which point of the moon the reflection came (the beam has a diameter of a few kilometers when hitting the moon) and so you could never make measurements with the precision of a few centimeters. You need some fixed point on the lunar surface.

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"Flying in space is risky business, but just staying on this planet is risky business too." - John Young, astronaut