![[CYMA] LMT Style MK18 M4 20mm Railed Metal Rear Sight [BLK]](http://www.sixmm.com/cdn/shop/products/CYMA_KC20mmRailedMetalRearSight_BLK_2.jpg?v=1639031518&width=1200)
![[CYMA] LMT Style MK18 M4 20mm Railed Metal Rear Sight [BLK]](http://www.sixmm.com/cdn/shop/products/CYMA_KC20mmRailedMetalRearSight_BLK_3.jpg?v=1639031518&width=1200)
![[CYMA] LMT Style MK18 M4 20mm Railed Metal Rear Sight [BLK]](http://www.sixmm.com/cdn/shop/products/CYMA_KC20mmRailedMetalRearSight_BLK_1.jpg?v=1639031518&width=1200)
![[CYMA] LMT Style MK18 M4 20mm Railed Metal Rear Sight [BLK]](http://www.sixmm.com/cdn/shop/products/CYMA_KC20mmRailedMetalRearSight_BLK_3_84d4475e-02e4-49f8-b449-9deea4d28a27.jpg?v=1639031513&width=1200)
![[CYMA] LMT Style MK18 M4 20mm Railed Metal Rear Sight [BLK]](http://www.sixmm.com/cdn/shop/products/CYMA_KC20mmRailedMetalRearSight_BLK_4.jpg?v=1639031514&width=1200)
![[CYMA] LMT Style MK18 M4 20mm Railed Metal Rear Sight [BLK]](http://www.sixmm.com/cdn/shop/products/CYMA_KC20mmRailedMetalRearSight_BLK_5.jpg?v=1639031514&width=1200)
![[CYMA] LMT Style MK18 M4 20mm Railed Metal Rear Sight [BLK]](http://www.sixmm.com/cdn/shop/products/CYMA_KC20mmRailedMetalRearSight_BLK_2.jpg?v=1639031518&width=450)
![[CYMA] LMT Style MK18 M4 20mm Railed Metal Rear Sight [BLK]](http://www.sixmm.com/cdn/shop/products/CYMA_KC20mmRailedMetalRearSight_BLK_3.jpg?v=1639031518&width=450)
![[CYMA] LMT Style MK18 M4 20mm Railed Metal Rear Sight [BLK]](http://www.sixmm.com/cdn/shop/products/CYMA_KC20mmRailedMetalRearSight_BLK_1.jpg?v=1639031518&width=450)
![[CYMA] LMT Style MK18 M4 20mm Railed Metal Rear Sight [BLK]](http://www.sixmm.com/cdn/shop/products/CYMA_KC20mmRailedMetalRearSight_BLK_3_84d4475e-02e4-49f8-b449-9deea4d28a27.jpg?v=1639031513&width=450)
![[CYMA] LMT Style MK18 M4 20mm Railed Metal Rear Sight [BLK]](http://www.sixmm.com/cdn/shop/products/CYMA_KC20mmRailedMetalRearSight_BLK_4.jpg?v=1639031514&width=450)
![[CYMA] LMT Style MK18 M4 20mm Railed Metal Rear Sight [BLK]](http://www.sixmm.com/cdn/shop/products/CYMA_KC20mmRailedMetalRearSight_BLK_5.jpg?v=1639031514&width=450)
![[CYMA] LMT Style MK18 M4 20mm Railed Metal Rear Sight [BLK]](http://www.sixmm.com/cdn/shop/products/CYMA_KC20mmRailedMetalRearSight_BLK_2.jpg?v=1639031518&width=4096)
![[CYMA] LMT Style MK18 M4 20mm Railed Metal Rear Sight [BLK]](http://www.sixmm.com/cdn/shop/products/CYMA_KC20mmRailedMetalRearSight_BLK_3.jpg?v=1639031518&width=4096)
![[CYMA] LMT Style MK18 M4 20mm Railed Metal Rear Sight [BLK]](http://www.sixmm.com/cdn/shop/products/CYMA_KC20mmRailedMetalRearSight_BLK_1.jpg?v=1639031518&width=4096)
![[CYMA] LMT Style MK18 M4 20mm Railed Metal Rear Sight [BLK]](http://www.sixmm.com/cdn/shop/products/CYMA_KC20mmRailedMetalRearSight_BLK_3_84d4475e-02e4-49f8-b449-9deea4d28a27.jpg?v=1639031513&width=4096)
![[CYMA] LMT Style MK18 M4 20mm Railed Metal Rear Sight [BLK]](http://www.sixmm.com/cdn/shop/products/CYMA_KC20mmRailedMetalRearSight_BLK_4.jpg?v=1639031514&width=4096)
![[CYMA] LMT Style MK18 M4 20mm Railed Metal Rear Sight [BLK]](http://www.sixmm.com/cdn/shop/products/CYMA_KC20mmRailedMetalRearSight_BLK_5.jpg?v=1639031514&width=4096)
My order has been in transit for over 80 days and when I tried to contact them via WhatsApp, they never replied. They only replied after I submitted a complaint through PayPal. Then they only provided the tracking information (that I already had) and said to be patient. No other assistance offered or provided. I had to make enquiries from both Chinese and NZ postal offices. Unfortunately, they only point at each other or say to contact the shipper. I am currently trying to get my money back from PayPal, but this appears to be a slow and difficult process. So due to my experience, I can't recommend 6mm. Use at your own risk.
What was delivered was not what I ordered. A receiver with a buffer tube spigot on the lower receiver was what I ordered. What was delivered was a lower receiver with a threaded aperture. I have a lathe so I was able to machine an adapter.
This does not fit my mws urgi, holes won’t line up.
Awesome had 2 orders from 6mm, very happy. Be patient with delivery 👍
Good product, easy to load. Awesome perfomance.