EVOLUTION... the incremental succession of speargun perfection. THE MOST ACCURATE speargun in America as independently tested by Hawaii Skindiver Magazine* and Spearing Magazine out of Florida**. Confidence in your ability and equipment puts fish on the plate. Every element of the HammerHead Evolution2TM complements the next for consistent and accurate shots dive-in and dive-out under the most demanding of situations. The unique precision of the HammerHead Evolution2TM starts with the streamline and hydrodynamic Evolution2TM Open Muzzle that holds twin Power HelixTM Bands. To further guide the shot and minimize speargun recoil and "kick" the barrels of all HammerHead Evolution2TM poses a slick track and are ballasted for neutrality, sound dampening, and recoil minimization. All Evolution2TM Spearguns are then matched with precision-machined American made 17-4 Stainless Steel Heat Treat Shafts designed with pin tabs set 2.5" from the rear to maximize band stretch and power. Contoured ergonomic grips maintain the divers wrist in "strong-fist" position allowing the diver to maximize their strength while firing to prevent recoil and kick with increasing shot power. Additionally the Evolution2TM model features an adjustable trigger pull to accommodate a wide range of hand sizes and glove thicknesses. Finally each Evolution2TM Speargun is professionally rigged by hand with mono shooting line, loading pad, and front-end bungee all standard features. HammerHead Evolution2TM Easy to Use, Easy Aim, Easy to Load, Easy to Shoot, and Easy to take home your next dinner or new World Record.