I estimate it's about 4" long. There is no reason it cant weight the same as "regular" arrows. No need for fletching, as it relies on HUGE difference between COG and COP (center of pressure, which is where air resistance is centered).
Looks very appealing to me. compact, low air drag (I"m not sure about turbulences), very solid (wont bend), no vanes to care for ect.
The bullet bolt
