That C02 knob caught my eye as well but like everything SR-1 I knew there was more than meets the eye. Is it small, lite and easy to lose? Yes. But I implore you to take a closer look, the knob is in itself the work of craftsmanship. However for fear of losing it I would suggest you hook it up with a lanyard. I guess if I had a choice I would prefer it be big n beefy but that's just me.