![[Systema] Set-pin for Forward Assist Knob[For Systema M4 PTW]](http://www.sixmm.com/cdn/shop/products/9920__Systema__Set-pin_for_Forward_Assist_Knob_For_Systema_M4_PTW_1.jpg?v=1609905112&width=1200)
![[Systema] Set-pin for Forward Assist Knob[For Systema M4 PTW]](http://www.sixmm.com/cdn/shop/products/9920__Systema__Set-pin_for_Forward_Assist_Knob_For_Systema_M4_PTW_1.jpg?v=1609905112&width=450)
![[Systema] Set-pin for Forward Assist Knob[For Systema M4 PTW]](http://www.sixmm.com/cdn/shop/products/9920__Systema__Set-pin_for_Forward_Assist_Knob_For_Systema_M4_PTW_1.jpg?v=1609905112&width=4096)
Mounts without problems, and gives a S.F. look ;)
The piece takes place of the old one perfectly, The relief is especially noticeable during the blowback
Send complet false model, not like in the photo :( an became only 50% cash back
Got two of these from Sixmm. One went into a ASG M15 URX-SBR, the other into Specna Flex M4. Simple fit with no modifications required. Easy reroute of power cable to rear (channel part of gearbox) into PDW stock, Specna required a little extension to get to end of buffer tube. 1.14J on 90 PSI on 6.02 x 230mm barrel. 16 rps. Excellent, affordable, super quiet and responsive trigger.