Why aren't there double stack nerf mags. That are both the same size yet the double stack is slightly thicker and holds twice as many darts. (I know it's a bad picture) :
Review] Nerf Worker Stock and 22 Dart Banana Magazine from NFSTRIKE.com - YouTube
Darts World Magazine
Worker Banana 18 Short Dart Talon Magazine 18-22 Round - Etsy