The NITRO - D mechanism is the ideal solution for upgrading spearguns with DEMKA thermoplastic handle, thermoplastic handle, solving all technical and functional  problems with the mechanism.

It is easily fitted without modifications by using the holding pins and line release as in the original handle on same points.

Also the mechanism for sure, trouble-free movement of the line release, incorporates a superior operating and manufacturing reversing trigger mechanism that operates with push-rod propellants, independent of the trigger and  spear rod, preventing the effect of hard trigger and deflection. The indentation at the back of the trigger gives elegance with minimal weight that is a patented visual feature point of our mechanisms.

The innovative operating system with pushers of the mechanism is patent protected. Any change or modification with respect to the shape, size, dimensions, materials of construction and assembly including a variety of application fields and if it does not include new inventive steps and is not conducive to the technique already known will be considered an aim and aspirations of the present invention.

The mechanism, due to its unique design has an unparalleled sensitivity factor due the short route &, best angle of rotation thus the trigger resistance is unaffected under huge loads.

It self-center and locked the shaft 6.5 cm further than the classic front mechanism and can accept shafts with extra shark fin / notch, giving maximum loading length. It has excellent shooting image.