The Viridian lasers for your LC9 are a bit newer on the market than their more established brothers (the lasermax and crimson trace).
However, I think Viridian makes a great product and we have been able to source their laser for a better price than any of our competitors so we are outfitting civilian concealed carry enthusiasts with these things like hot cakes.
Click here to see our best Viridian Laser for LC9 on the dang internet.
Thing is you can get this option from the factory, but we still sell a ton of them aftermarket.