Sorry almost forgot.
I highly suggest you get out to a game and get age verified, although we all love to discuss the legality of a conversion kit for a glock 18c we cannot forget that becoming age verified is fun and women will instantly find you more attractive.
Its also guaranteed to increase the size of your chairsoft brand epeen.
Now thats out of the way.
You are aware its only a conversion kit right. Making the total cost of this "gun" close to what a good quality gbbr or aeg would set you back. And heck if you get age verified you can probably find a nice used gbbr or aeg for less!
Think of the possibilites.