Cautionary note: Make sure each and every blade on each and every head flops open on it's own when you remove the o-ring. I've had terrible luck with mechanicals because I have yet to get a set that actually functioned properly out of the box. Even the Rocket Steelheads I got were gummed up and wouldn't open correctly. I had to stone off some burrs around the screw holes before they'd act right. I've never used them for hunting, but, from the testing I did, if I were to use mechanicals it'd be the Steelheads.