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.
![[Army Force] Knight's Type KAC RIS RAS Rail Cover Panel [4pcs/set][BLK]](http://www.sixmm.com/cdn/shop/products/ArmyForce_Knight_sTypeRISRASRailCoverPanel_4pcsSet_BLK_17a3ae08-b206-4d65-853e-92964d09d02d.jpg?v=1634307657&width=950)
![[GG] Knight's Type Rail Cover Set (2/4/5/6 Ribs x 2)[BLK]](http://www.sixmm.com/cdn/shop/products/Energy_Knight_sTypeRailCoverSet_2456Ribsx2_BLK.jpg?v=1636464538&width=950)
![[Army Force] M-LOK Nylon 5 slot Picatinny Rail[4pcs/Set]](http://www.sixmm.com/cdn/shop/products/ArmyForce_M-LOKNylon5slotPicatinnyRail_4pcsSet.jpg?v=1650445600&width=950)
![[Army Force] M-LOK Nylon 5 slot Picatinny Rail[4pcs/Set]](http://www.sixmm.com/cdn/shop/products/ArmyForce_M-LOKNylon5slotPicatinnyRail_4pcsSet_1.jpg?v=1650445600&width=950)
![[BELL] Nylon Picatinny Rail Set[4/6/8/10 Slots][M-Lok Ver.]](http://www.sixmm.com/cdn/shop/products/BELL_NylonPicatinnyRailSet_46810Slots_M-LokVer..jpg?v=1611328626&width=950)
![[TMC] M-LOK Rail Cover[Type A][BLK]](http://www.sixmm.com/cdn/shop/products/TMC_M-LOKRailCover_TypeA_BLK_3.jpg?v=1682116986&width=950)
![[TMC] M-LOK Rail Cover[Type A][BLK]](http://www.sixmm.com/cdn/shop/products/TMC_M-LOKRailCover_TypeA_BLK_1.jpg?v=1682116986&width=950)
![Copy of [BELL] Nylon Picatinny Rail Set[4/6/8/10 Slots][M-Lok Ver.][DE]](http://www.sixmm.com/cdn/shop/products/BELL_NylonPicatinnyRailSet_46810Slots_M-LokVer._ED.jpg?v=1611328664&width=950)
![[ARES] 3 inch Key Rail System for Keymod System [2pcs] [1pack]](http://www.sixmm.com/cdn/shop/products/KM-R-003-1L.jpg?v=1614446604&width=950)
![[ARES] 3 inch Key Rail System for Keymod System [2pcs] [1pack]](http://www.sixmm.com/cdn/shop/products/eng_pl_ARES-3-Key-Rail-for-Keymod-2-pcs-KM-R-003-14679_2.jpg?v=1614446604&width=950)
![[AABB] M-LOK Nylon 5 slot Picatinny Rail[4pcs/Set]](http://www.sixmm.com/cdn/shop/products/ArmyForce_M-LOKNylon5slotPicatinnyRail_4pcsSet_28574475-32cc-41ad-883e-841cc3343e8c.jpg?v=1660139405&width=950)
![[AABB] M-LOK Nylon 5 slot Picatinny Rail[4pcs/Set]](http://www.sixmm.com/cdn/shop/products/ArmyForce_M-LOKNylon5slotPicatinnyRail_4pcsSet_1_7a16837a-1c01-4ba7-96c8-e6e7b4535059.jpg?v=1660139405&width=950)
![[ARES] 4.5 inch Key Rail System For Keymod System[2pcs/set]](http://www.sixmm.com/cdn/shop/products/KM-R-002-1L.jpg?v=1614064818&width=950)
![[Z-Parts] KSC KRISS CNC ALUMINUM Rail Set](http://www.sixmm.com/cdn/shop/products/ksc-kriss-002-01.jpg?v=1611817916&width=950)
![[Z-Parts] KSC KRISS CNC ALUMINUM Rail Set](http://www.sixmm.com/cdn/shop/products/ksc-kriss-002-02.jpg?v=1611817919&width=950)
![[GG] Genuine Wooden Protective Rail Cover[For Any M-LOK Rail Handguard System][Ebony Wood]](http://www.sixmm.com/cdn/shop/files/GG_GenuineWoodenProtectiveRailCover_ForAnyM-LOKRailHandguardSystem_EbonyWood_2.jpg?v=1701990056&width=950)
![[GG] Genuine Wooden Protective Rail Cover[For Any M-LOK Rail Handguard System][Ebony Wood]](http://www.sixmm.com/cdn/shop/files/GG_GenuineWoodenProtectiveRailCover_ForAnyM-LOKRailHandguardSystem_EbonyWood_1_9ac18982-c1e2-4e88-8722-3780aab4f25c.jpg?v=1701990055&width=950)
![[Ergo] 18-Slot Ladder LowPro Rail Cover, package of 2 covers[BLK]](http://www.sixmm.com/cdn/shop/files/Ergo_18-SlotLadderLowProRailCover_packageof2covers_BLK_2.jpg?v=1699528791&width=950)
![[ARES] Amoeba 3.5 inch Plastic Key Rail System for M-Lok System [2pcs] [Pack]](http://www.sixmm.com/cdn/shop/products/AM-ML-R-005-1L_1.jpg?v=1614319912&width=950)
![[ARES] Amoeba 3.5 inch Plastic Key Rail System for M-Lok System [2pcs] [Pack]](http://www.sixmm.com/cdn/shop/products/AM-ML-R-005-2L_1.jpg?v=1614319913&width=950)
![[Z-Parts] M-LOK System 9 Slots Alloy 20mm Rail (Blk)](http://www.sixmm.com/cdn/shop/products/img_0611.jpg?v=1611649929&width=950)
![[Z-Parts] M-LOK System 9 Slots Alloy 20mm Rail (Blk)](http://www.sixmm.com/cdn/shop/products/img_0613.jpg?v=1611649929&width=950)
![[Z-Parts] 416 SMR Handguard Rail Set (Blk)](http://www.sixmm.com/cdn/shop/products/201912311226583.jpg?v=1613010238&width=950)
![[Z-Parts] 416 SMR Handguard Rail Set (Blk)](http://www.sixmm.com/cdn/shop/products/416-smr-slots-001.jpg?v=1613010238&width=950)
![[Golden Eagle] Jing Gong G36 Tactical 20mm 7 slot Rail](http://www.sixmm.com/cdn/shop/products/GoldenEagle_JingGongG36Tactical20mm7slotRail.jpg?v=1633001398&width=950)
![[Element] TDI Style Mini-Protection Panel [DE]](http://www.sixmm.com/cdn/shop/files/Element_TDIStyleMini-ProtectionPanel_DE.jpg?v=1699528575&width=950)
![[GG] Genuine Wooden Protective Rail Cover[For Any M-LOK Rail Handguard System][Padauk Wood]](http://www.sixmm.com/cdn/shop/files/GG_GenuineWoodenProtectiveRailCover_ForAnyM-LOKRailHandguardSystem_PadaukWood_2.jpg?v=1701990156&width=950)
![[GG] Genuine Wooden Protective Rail Cover[For Any M-LOK Rail Handguard System][Padauk Wood]](http://www.sixmm.com/cdn/shop/files/GG_GenuineWoodenProtectiveRailCover_ForAnyM-LOKRailHandguardSystem_EbonyWood_1_96368b74-4379-4f35-8e35-bb7e7a50f396.jpg?v=1701990156&width=950)
![[GG] Polymer Plastic Protective Panel Set[4pcs/Set]](http://www.sixmm.com/cdn/shop/files/GG_PolymerPlasticProtectivePanelSet_4pcsSet_2.jpg?v=1701823599&width=950)
![[GG] Polymer Plastic Protective Panel Set[4pcs/Set]](http://www.sixmm.com/cdn/shop/files/GG_PolymerPlasticProtectivePanelSet_4pcsSet.jpg?v=1701823600&width=950)
![[ARES] 6 inch Key Rail System for Keymod System [2pcs] [1pack]](http://www.sixmm.com/cdn/shop/products/KM-R-001-1L.jpg?v=1614139314&width=950)
![[ARES] 6 inch Key Rail System for Keymod System [2pcs] [1pack]](http://www.sixmm.com/cdn/shop/products/ares-90697.jpg?v=1614139314&width=950)
![[Z-Parts] M-LOK System 7 Slots Alloy 20mm Rail [BLK]](http://www.sixmm.com/cdn/shop/products/img_0596.jpg?v=1611304906&width=950)
![[Z-Parts] M-LOK System 7 Slots Alloy 20mm Rail [BLK]](http://www.sixmm.com/cdn/shop/products/img_0597.jpg?v=1611304912&width=950)
![[Army Force] M-LOK Nylon 5 slot Picatinny Rail[4pcs/Set][CB]](http://www.sixmm.com/cdn/shop/products/10508__Army_Force__M-LOK_Nylon_5_slot_Picatinny_Rail_4pcsSet_CB_1_1.jpg?v=1610695135&width=950)
![[Army Force] M-LOK Nylon 5 slot Picatinny Rail[4pcs/Set][CB]](http://www.sixmm.com/cdn/shop/products/10508__Army_Force__M-LOK_Nylon_5_slot_Picatinny_Rail_4pcsSet_CB__2_1.jpg?v=1610695138&width=950)
![[Army Force] 4 Slots Rail Panel[Keymod System][CB]](http://www.sixmm.com/cdn/shop/products/ArmyForce_4SlotsRailPanel_KeymodSystem_CB_1.jpg?v=1637638459&width=950)
![[Army Force] 4 Slots Rail Panel[Keymod System][CB]](http://www.sixmm.com/cdn/shop/products/ArmyForce_4SlotsRailPanel_KeymodSystem_CB_2.jpg?v=1637638459&width=950)
![[G&G] Side Rail Set [For Tokyo Marui 36C AEG Series]](http://www.sixmm.com/cdn/shop/products/G_G_SideRailSet_ForTokyoMarui36CAEGSeries.jpg?v=1671181576&width=950)