Does it retract?
This was taken from the NY DEC website. I hope it helps.
Q: I am an bowhunter and I want to switch from fixed blades to mechanical blades. How do I know which blades are legal?
A: Broadheads with mechanical blades are legal for big game if the blades do not form a barb or hook when the arrow is pulled from the flesh of a deer or bear. Most mechanical broadheads have a barbed profile when in the expanded (open) position. However, mechanical blades are legal if the blades DO NOT form a barb or hook when the arrow is pulled from the flesh of a deer or bear.
This link says illegal:http://www.archerytalk.com/vb/showthread.php?t=1161638&page=1