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
![[Alpha Parts] Dust Cover Set [For Systema M4 PTW Series]](http://www.sixmm.com/cdn/shop/products/AlphaParts_DustCoverSet_ForSystemaM4PTWSeries_2.jpg?v=1633411703&width=950)
![[Alpha Parts] Dust Cover Set [For Systema M4 PTW Series]](http://www.sixmm.com/cdn/shop/products/AlphaParts_DustCoverSet_ForSystemaM4PTWSeries_1.jpg?v=1633411703&width=950)