I got side tracked reading about the Sig Tread hand guard and it seems there are a lot of complaints about not having a barrel nut wrench? I'm pretty sure I could crank those out just like Sig makes for $10 or less. I can even change the design a bit if need be.

Not as bad as URX Barrel Nut Wrench, but for $33?? That's got to be a huge mark up...