I do not have the X10. I have the Laser Academy and the Blackbeard. A rail is needed for the X10, and very few of my guns are railed. To answer your question, yes you can dry fire with it. You load the pistol with a laser cartridge. Is it worth it? Depends on how much you use it. You can save a TON of money not burning ammo at the range. The Laser Academy has a LOT of different options ( games I guess ). Single/multi shooter drills. A lot of different targets. I mostly use it for timing draw to fire/accuracy. The X10 also tracks movement from holster, all the way to the shot being fired. Laser Academy ( and I suspect X10 ) lets you list all your guns and keeps track of all your scores, so you can track how you improve over months or years. They can be a bit pricey to start, but with no trip to the range necessary, and no ammo burned, it pays for itself pretty quickly. There are a lot of youtube videos.