On-topic, just arrived today:
Aftermath Bone Collector Elite slingshot!
Black. Extends out to a small 'starship' type configuration. The wrist brace is removable so it's legal here in NY. Has an ammo dispenser in the handle, pretty cool design. Very powerful black tubes! And very accurate. Only problem is the sight is for righties, and I'm lefty. But I really don't need that anyway.
I'll eventually figure out a way to modify it to dispense ammo larger than 3/8".