Nope, it's is just a slide (and .22 magazine); the receiver is what constitutes a "firearm" and is already registered. I personally have had the Kadet kit for my 9mm 75B for two years now, and it has been the most reliable and accurate .22 pistol I have ever owned, and it converts calibres in seconds: the weight, and trigger are the same, which makes it great for cheap IPSC practise or teaching others (or children) to shoot. You'll like it. By the way, it will eat any type of ammo and I personally like the Fiocchi standard velocity stuff--slide automatically holds open after last round. Hope this helps.