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![[G&D] M130 Cylinder Unit [For Systema M4 PTW Series][Yellow]](http://www.sixmm.com/cdn/shop/products/G_D_M130CylinderUnit_ForSystemaM4PTWSeries_Yellow_3.jpg?v=1626098559&width=1200)
![[G&D] M130 Cylinder Unit [For Systema M4 PTW Series][Yellow]](http://www.sixmm.com/cdn/shop/products/G_D_M130CylinderUnit_ForSystemaM4PTWSeries_Yellow_4.jpg?v=1626098562&width=1200)
![[G&D] M130 Cylinder Unit [For Systema M4 PTW Series][Yellow]](http://www.sixmm.com/cdn/shop/products/G_D_M130CylinderUnit_ForSystemaM4PTWSeries_Yellow_2.jpg?v=1626098554&width=450)
![[G&D] M130 Cylinder Unit [For Systema M4 PTW Series][Yellow]](http://www.sixmm.com/cdn/shop/products/G_D_M130CylinderUnit_ForSystemaM4PTWSeries_Yellow_1.jpg?v=1626098556&width=450)
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![[G&D] M130 Cylinder Unit [For Systema M4 PTW Series][Yellow]](http://www.sixmm.com/cdn/shop/products/G_D_M130CylinderUnit_ForSystemaM4PTWSeries_Yellow_4.jpg?v=1626098562&width=450)
![[G&D] M130 Cylinder Unit [For Systema M4 PTW Series][Yellow]](http://www.sixmm.com/cdn/shop/products/G_D_M130CylinderUnit_ForSystemaM4PTWSeries_Yellow_2.jpg?v=1626098554&width=4096)
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All the correct items arrived (3x hi capa mags and 1x oversized 50rd mag), but the o-ring on one of the valves was damaged and it leaked gas. I asked for a replacement o-ring set or full valve assembly but never got a reply. Not completely happy with the service.
I have ordered from SIXmm a couple of times now and the service is excellent; shipping is fast and very reasonably priced. I got the Army Force Magwell for my KJ Works KP-07 and it was a drop in fit, no need for adjustments. I will definitely order again.
Nice and easy to install!
It works perfectly.
Stock works great, minimal wiggle when in the open position
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