51 is connected to the head with a pivot axle 42 and a guide pin 44 the guide pin 44 is further located within a track 43 that provides linear motion of the guide pin 44 within the arrowhead the blades 50 and 51 remain in the retracted orientation until the arrow is launched from a bow compound bow cross bow or other bolt launching apparatus fig2 shows a perspective view of the arrowhead in a set or primed orientation the arrowhead enters this condition when sufficient force 100 is exerted onto the end of the arrow shaft that is transferred 100 to the arrowhead because the arrowhead originally has a mass as rest the initial acceleration or thrust 100 primes the arrowhead in general regardless of how much force or acceleration is forced 100 into launching the arrow the arms 52 and 53 will only extend a limited amount to set the arrowhead the arms 52 and 53 will pivot on axle 42 and a track within each arm will be guided by the guide pin 44 that moves within track 43 the operation of the track and guide pin 44 is shown and described in more detail with fig4 to 7 the tip of the arrowhead 40 and 41 will also slightly displace 101 the arrowhead will remain in this primed.