The Meandros Nitro B4 is the ideal suggestion to upgrade PICASSO Basik & Asegai speargun handles, with reverse mechanism. This is a butted version of the mechanism, but if you require a butt-less version you can simply modify be measuring and cutting with hacksaw or cutting blade on an angle grinder

• This quality engineered stainless steel trigger reverse mechanism insert system is compatible with thermoplastic handle type Picasso Basik & Asegai.
• Installation can be easily performed by any user within short time period.
• The mechanism consists of the best reverse trigger mechanism system with tappets.
• Resolves all utilitarian and technical problems with this mechanism.
• It self-centres and engages the shaft 6.5 cm further back in relation to the classic front mechanism.
• Can accept shafts with extra slots, thereby giving the maximum loading length.
• It has an excellent line of sight.
• The design has been thoroughly studied thus offering sensitivity unaffected by load.
• The trigger has a short pull and super smooth release. It also uses the same slot as the original handle for the line release.
• Butted version will require some modification to the rear of the handle to let the thickness of the butt extension to sit down horizontal.
  
• You will need to reuse pins from previous cassette.

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.