First, a clarification on the product offered by the vendor, the announcement is ambiguous: it is, as shown in the first picture, the version "Sonic series" Praxis, translucent green. Super ugly. If you are sensitive to the aesthetics of a Nerf much as its services better to invest a little more in the "normal" version. That said, the Praxis is a nerve in the best vein. The Vortex system is just great! The discs have a trajectory "gliding" very straight and horizontal up to a dozen meters before they fall, or rather suddenly branch off to the right, almost at right angles (with a little practice, it must be Achievable an opponent from behind a shelter.) The sheer distance is not greater than that of a good N-Strike Elite, but the useful distance, that is to say that to which we can hope to achieve its target, is incomparably better. It is amazing to see the disks, despite the very rapid decrease in speed, pursue their course without deviating at all. Furthermore, they deteriorate less quickly than darts. However, their impact is short a little harder. Avoid pulling on the chat with! The operation of the blaster is very pleasant as well as very simple: no need to put the head in a precise position to unlock the charger, regardless of the state of the blaster, loaded or not, armed or not, the lever is pulled and Feeder ejects. Vigorously enough, moreover, think about catching the flight. Désenrayement The system is very well thought out pulling the rocker and the disc is ejected by the gun. Although more accessible to a young child that the subtleties of a Rampage or Retaliator. The pump, too, is easy to operate, with a short stroke and low resistance. Less dedicated to smaller Praxis is the template. Tributary of ammunition, it is, inevitably, very large cannon and the central part, which includes the mechanism. The stick is removable to match, a calculated length for adult arm. This is the only flaw of Praxis (for small hands, at least. The bear paws, however, appreciate!), With the absence of rapid fire "slam-fire". Perhaps the Vortex concept do not allow it, I do not know, I have not dismantled the beast. In the end, a great nerve, perhaps my favorite with the Alpha Elite Trooper. This is my first Vortex and I do not regret having tried it.