T-N.T APS-X HOP-UP Retrofit Kit for GHK M4 series GBB (275mm S+)
This new amazing Retrofit Kit was especially developed to replace and upgrade the entire GHK M4 HOP-UP structure. With the ongoing demand for quality upgrade parts for GHK M4 GBB, T-N.T. STUDIO has developed this Retrofit Kit which includes all necessary parts inclunding a HOP-UP bucking and HOP-UP chamber.
●HOP-UP Chamber : formed integrally aluminum CNC , strong & durable !!
●HOP-UP bucking : development for GHK M4 series exclusive T-Hop UP system Rubber !!
●The pressure block is the vertical, and use of trailing edge cover design, when adjusting HOP-UP, the pressure block will be not incline.
●Add a elastic O-ring rear of HOP-UP chamber, closely integrated with the outer barrel, will be avoid the chamber slide and adjust ring too tight cause not to adjusting HOP-UP.
●BB loading position more accurate, effective performance improvements !!
●Improve the original "AEG specifications rubber" to "GBB specifications rubber", effective improvement BB feedings issue, airtight and bucking's lip fold inwards problem.
Precision Air-cushion S+ inner barrel (370mm S+ inner barrel, with the original outstanding gasification performance, let your GHK M4 enhance to next level !!
●All products are recommended to have DIY ability to use.
●Before the modify, recommended to check and exclude the original issues to achieve the best results, or commissioned by the store to modified.
●Replacement of kits does not mean that can solve all the original parts of the problem, sometimes still have to modify the other components to achieve the best performance.