My advice is to get a $20 laser module off ebay first and then see if you really want to upgrade to a $500 laser. I have one of the ebay ones and it has been on the shelf since about 2 weeks after I got it. About the only thing a laser is good for is shooting around a shield, which is what the emergency response teams use it for. It is also useful for people who don't shoot a lot and need it for a self defence situation or to intimidate someone, but you should just move to a better neighbourhood or stop dealing drugs if this is your application. Your handgun came with perfectly good sights; learn how to use them.