![[5KU] Magazine O-ring set[For WA M4 GBB Magazine]](http://www.sixmm.com/cdn/shop/products/KingArms_O-RingSetForM4MagazineGasBlowback_199ccccb-8df0-465c-ac59-cd31f5df6ef4.jpg?v=1637579910&width=1200)
![[5KU] Magazine O-ring set[For WA M4 GBB Magazine]](http://www.sixmm.com/cdn/shop/products/KingArms_O-RingSetForM4MagazineGasBlowback_199ccccb-8df0-465c-ac59-cd31f5df6ef4.jpg?v=1637579910&width=450)
![[5KU] Magazine O-ring set[For WA M4 GBB Magazine]](http://www.sixmm.com/cdn/shop/products/KingArms_O-RingSetForM4MagazineGasBlowback_199ccccb-8df0-465c-ac59-cd31f5df6ef4.jpg?v=1637579910&width=4096)
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Original VFC umarex HK416/M4 v3 as advertised and fast delivery. highly recommended.
Very happy looks awesome and I,haven't had any problems with any of my purchases with 6mm 😁
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.