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![[Z-Parts] Mk16 Barrel Nut for Marui SOPMOD M4 GBB Rifle (Tan)](http://www.sixmm.com/cdn/shop/products/img_0152-log_8fc54184-2053-4546-b99e-d7f68f479f1f.jpg?v=1611651432&width=450)
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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