I have two of these, and they are my weapon of choice for short skirmishes. They fire just about every variety of Nerf dart out there, so you don't have to be picky when salvaging ammunition. Plus, the nifty cylinder release button allows you to quickly reload during lulls in combat. The spring-return slide is very handy, as it allows you to dual-wield the revolvers, racking the slide with your pants pockets (or anything else nearby). However, reloading the cylinder takes both hands, and is not as fast as a clip-fed weapon. Rail mount on the slide allows you to add sights, if desired.
Overall, this is a very well-rounded weapon and a blast to shoot. Just make sure you get some extra darts!