There's no difference. The Le versions or qualified professional versions come at a discount threw the manufacturer. Plus their way of giving law enforcement/ first responders, fire fighters and a bunch of others first chance to buy high demand firearms and accessories. Hope this helps.

Joel, no difference, same gun.

Joel, there are Zero difference in the actual firearms. The QP/LE packages are designated by the manufacturer to be sold to first responders at a discount. Some packages may have additional goodies like an extra magazine, holster etc but, the firearms are identical. Cheers and stay safe! -- budsgunshop.com/qualified_professional_discounts.php

The only difference in this case is just the price, and who can buy it the LE edition is discounted by sig Sauer to be sold to first responders, military veterans, and other qualified professionals, the standard cost more and can be purchased by general public.
Full details on the qualified professionals discount here
budsgunshop.com/qualified_professional_discounts.php