RE: help, can't remember?
Are you refering to the crimson tallons with aerofoil technology? If so I would reccomend another head. The blades are too flimsy and break off or collapse pretty easily. According to folks like 5shot and others that havetested and used them. They may be illegal in your state too. I am 99% sure that they are illegal here in Colorado.
Magnus is adding a four blade stinger in 125 grain weight this February. I also like innerloc heads. Super durable head and they fly great for me.