The actual trigger mechanism is installed inside the plastic muzzle and is a form of pull down sear lever type found in most spring guns, only smaller in size to fit in the reduced dimensions available in the muzzle. The front pivot pin is the sear lever pivot and is alarmingly close to the outer edge of the muzzle molding! The second pivot pin is the trigger pivot, the mini trigger being operated by a pull rod that runs back to a sliding trigger in the grip handle.
Similar to the RPS-3 the gun uses a multi-drilled inner barrel tube with an outer rubber pipe covering the ported section clamped at either end. When the spear is pushed through the muzzle's "O" ring seal the water trapped inside the barrel is displaced through the tiny port holes to expand the rubber pipe radially. Air pressure inside the tank resists this expansion of the rubber pipe and provides the energy storage of the gun by causing the tank pressure to increase. When the trigger is pulled the water under pressure flows back through the port holes in the inner barrel and drives the spear from the gun. Due to the bare spear tail used the “Kobra” avoids the muzzle seal busting problems of the RPS-3, but requires a front tied spear.
No stainless steel parts appear to be used, so really a freshwater gun unless you thoroughly wash it out and pump the freshwater filled inner barrel with the spear to remove any salt residues out from under the rubber pipe where they would otherwise be trapped against the outer surface of the inner barrel.
