Hammerhead Evolution2 Raptor Speargun, Spearfishing, Diving, Free Diving E2 Handle - stainless steel parts, housing, sear, pins, side line release Eliptical Ploy coated Barrel - increased tracking, stealth and reduction in recoil Open muzzle - dual bands holes 9/32" diameter, Stainless steel 17-4, hardened shaft with Welded Hydro tabs very accurate