The LEM functions exactly as a Single Action, just like the M&P. Both are marketed as DAO to police agencies to meet political "safety" concerns. Standard LEM is horrible, just like a DAO pistol with a 9 pound trigger weight. Get the Light version or change the springs at home.

The trigger on my M&P9 and LEM pistols is darn near identical. Only difference is the external hammer, but neither I nor the cartridges care how the firing pin gets activated.

-- Chuck