I had to take apart as wasn’t working to find the slider had snapped along with plastic on wheel to had split , thankfully I had these from old gearbox and was able to get firing as gears are good,was going to complain but left too long before I tested
![[Systema] PTW Professional Training Weapon Nozzle spring](http://www.sixmm.com/cdn/shop/products/Systema_PTWProfessionalTrainingWeaponNozzlespring.jpg?v=1650429118&width=950)
![[Systema] PTW Professional Training Weapon Piston Head Guide spring [For Systema M4 PTW Series]](http://www.sixmm.com/cdn/shop/products/Systema_PTWProfessionalTrainingWeaponPistonHeadGuidespring_ForSystemaM4PTWSeries.jpg?v=1664352988&width=950)