I just wanted to encourage you not to mount the laser. I did this myself, I went beyond just sticking it on and actually practiced a great deal with it. I no longer use them as the results where not at all what I had hoped. I get it why people do this, on paper it seems like the ultimate solution, it looks amazing, and there is an undeniable "cool" factor about them.
Without writing a book about it, my shooting suffered not so much in accuracy but in speed. I found myself constantly "fishing" for the dot which is not very visible in some lighting conditions and almost disappears on black backgrounds, such as a black tshirt or coat ect. I used it as a crutch, once you stop working sight picture as a basic fundamental of shooting the others tend to fall away shortly after. At least that was my experience. There's a temptation to think that hold doesn't need to be as solid, trigger break not as clean ect. Because the laser is the primary means of hitting, or that tends to be the mental idea it leaves you with.
Just my opinion, I'm speaking only of pistols you may carry or actually use home gun, car gun, ect. As I said they are cool and make a great toy if ya want one on a range gun. I'd have loved to have kept mine, but those where my results.