Shipping Notice for USA Customers UPDATED 9th Nov., 2025
Due to recent updates in the tariff policy by the U.S. government, shipments from the UK to the USA may incur duties or import taxes, ranging from 20% to 40% of the total value. As a result, we will mark most items at 50% off of the original order value. In order to minimize the import duty charges, we will take steps that we hope will not cause any issues for you.
![[Z-Parts] 11.5inch DD GOV Outer Barrel [For VIPER M4 GBB Series][BLK]](http://www.sixmm.com/cdn/shop/products/Z-Parts_11.5inchDDGOVOuterBarrel_ForVIPERM4GBBSeries_BLK_2.webp?v=1673182635&width=950)
![[Z-Parts] 11.5inch DD GOV Outer Barrel [For VIPER M4 GBB Series][BLK]](http://www.sixmm.com/cdn/shop/products/Z-Parts_11.5inchDDGOVOuterBarrel_ForVIPERM4GBBSeries_BLK_3.webp?v=1673182635&width=950)
![[Z-Parts] 11.5inch DD GOV Outer Barrel [For WE-Tech M4 GBB Series][BLK]](http://www.sixmm.com/cdn/shop/products/Z-Parts_11.5inchDDGOVOuterBarrel_ForWE-TechM4GBBSeries_BLK_2.webp?v=1673182507&width=950)
![[Z-Parts] 11.5inch DD GOV Outer Barrel [For WE-Tech M4 GBB Series][BLK]](http://www.sixmm.com/cdn/shop/products/Z-Parts_11.5inchDDGOVOuterBarrel_ForWE-TechM4GBBSeries_BLK_3.webp?v=1673182506&width=950)
![[Z-Parts] 16 inch Steel Dimpled Outer Barrel for VIPER SR16 GBB](http://www.sixmm.com/cdn/shop/products/viper-sr16-004-01.jpg?v=1611810049&width=950)
![[Z-Parts] 16 inch Steel Dimpled Outer Barrel for VIPER SR16 GBB](http://www.sixmm.com/cdn/shop/products/viper-sr16-004-02.jpg?v=1611810049&width=950)
![[Z-Parts] 10.3inch DD GOV Outer Barrel for VIPER M4 GBB (Blk)](http://www.sixmm.com/cdn/shop/products/1_29764275-225e-4cdb-9f54-5534270fd096.jpg?v=1611560549&width=950)
![[Z-Parts] 10.3inch DD GOV Outer Barrel for VIPER M4 GBB (Blk)](http://www.sixmm.com/cdn/shop/products/4_8f2f4c2f-ebcd-4466-9f08-673ffea2be86.jpg?v=1611560554&width=950)
![[Z-Parts] DD GOV 14.5inch Outer Barrel for Marui M4 GBB](http://www.sixmm.com/cdn/shop/products/3_70b9a189-ef43-4b16-a94e-f8554d6b08bf.jpg?v=1611817296&width=950)
![[Z-Parts] DD GOV 14.5inch Outer Barrel for Marui M4 GBB](http://www.sixmm.com/cdn/shop/products/outer-barrel004.jpg?v=1611817296&width=950)
![[Z-Parts] Aluminum 10.5 Inch Outer Barrel For SYSTEMA M4 PTW AEG](http://www.sixmm.com/cdn/shop/products/systema-m4-002-01.jpg?v=1611814102&width=950)
![[Z-Parts] Aluminum 10.5 Inch Outer Barrel For SYSTEMA M4 PTW AEG](http://www.sixmm.com/cdn/shop/products/systema-m4-002-02.jpg?v=1611814102&width=950)
![[Z-Parts] 10.5 inch Steel Outer Barrel for WE MSK/ACR GBB [BLK]](http://www.sixmm.com/cdn/shop/products/1_c309d148-e85c-4747-9746-99837a3bb608.jpg?v=1619500095&width=950)
![[Z-Parts] 10.5 inch Steel Outer Barrel for WE MSK/ACR GBB [BLK]](http://www.sixmm.com/cdn/shop/products/2_6d6118b6-13cb-4c08-be54-0bd147f8293c.jpg?v=1619500097&width=950)
![[Z-Parts] 14.5 inch Outer Barrel Set for Marui M4A1 MWS GBB](http://www.sixmm.com/cdn/shop/products/marui-m4-005-01.jpg?v=1611561163&width=950)
![[Z-Parts] 14.5 inch Outer Barrel Set for Marui M4A1 MWS GBB](http://www.sixmm.com/cdn/shop/products/marui-m4-005-02.jpg?v=1611561163&width=950)
![[Z-Parts] Steel 10.4 inch Outer Barrel for KSC HK416 GBB (BLK)](http://www.sixmm.com/cdn/shop/products/1_b96f3ed8-4cb8-46d3-b18e-51a0c1ef716b.jpg?v=1611906881&width=950)
![[Z-Parts] Steel 10.4 inch Outer Barrel for KSC HK416 GBB (BLK)](http://www.sixmm.com/cdn/shop/products/2_8235fa18-05c3-40d1-a67e-760cbbedd692.jpg?v=1611906881&width=950)
![[Z-Parts] Steel 16 Inch Precision Outer Barrel For VIPER M4 GBBR](http://www.sixmm.com/cdn/shop/products/viper-m4-005-01.jpg?v=1611728671&width=950)
![[Z-Parts] Steel 16 Inch Precision Outer Barrel For VIPER M4 GBBR](http://www.sixmm.com/cdn/shop/products/viper-m4-005-02.jpg?v=1611728671&width=950)
![[Z-Parts] MK16 DD GOV 10.3 inch Steel Outer Barrel for KSC M4 GBB](http://www.sixmm.com/cdn/shop/products/1_1968cf7a-6290-4323-b819-97cce7a54576.jpg?v=1611737576&width=950)
![[Z-Parts] MK16 DD GOV 10.3 inch Steel Outer Barrel for KSC M4 GBB](http://www.sixmm.com/cdn/shop/products/3_58f3e0b8-87de-471b-b4b9-752329133c71.jpg?v=1611737576&width=950)
![[Z-Parts] 14.5 inch Steel Outer Barrel Set for Marui M4A1 MWS GBB](http://www.sixmm.com/cdn/shop/products/marui-m4-006-01.jpg?v=1611808989&width=950)
![[Z-Parts] 14.5 inch Steel Outer Barrel Set for Marui M4A1 MWS GBB](http://www.sixmm.com/cdn/shop/products/marui-m4-006-02.jpg?v=1611808989&width=950)
![[Z-Parts] 10 inch CNC Steel Outer Barrel[-14mm CCW][For Umarex 416 GBB Series]](http://www.sixmm.com/cdn/shop/files/httpimg3.redwolfairsoft.comuploadproductimgzps-vfc-hk416-002-2l.jpg?v=1687511281&width=950)
![[Z-Parts] 10 inch CNC Steel Outer Barrel[-14mm CCW][For Umarex 416 GBB Series]](http://www.sixmm.com/cdn/shop/files/httpimg3.redwolfairsoft.comuploadproductimgzps-vfc-hk416-002-5l.jpg?v=1687511282&width=950)
![[Z-Parts] CNC Steel Outer Barrel w/ 14mm CCW[For Umarex 416C GBB]](http://www.sixmm.com/cdn/shop/products/Z-Parts_CNCSteelOuterBarrelw14mmCCW_ForUmarex416CGBB_2.jpg?v=1641379654&width=950)
![[Z-Parts] CNC Steel Outer Barrel w/ 14mm CCW[For Umarex 416C GBB]](http://www.sixmm.com/cdn/shop/products/Z-Parts_CNCSteelOuterBarrelw14mmCCW_ForUmarex416CGBB_3.jpg?v=1641379653&width=950)
![[Z-Parts] 20 inch Outer Barrel[For Umarex/VFC HK417 GBB]](http://www.sixmm.com/cdn/shop/products/11010__Z-Parts__20_inch_Outer_Barrel_For_UmarexVFC_HK417_GBB_1.jpg?v=1609986663&width=950)
![[Z-Parts] 20 inch Outer Barrel[For Umarex/VFC HK417 GBB]](http://www.sixmm.com/cdn/shop/products/11010__Z-Parts__20_inch_Outer_Barrel_For_UmarexVFC_HK417_GBB__1_1.jpg?v=1609986666&width=950)
![[Z-Parts] Aluminium11.5inch DD GOV Outer Barrel [For Tokyo Marui M4 MWS Series][BLK]](http://www.sixmm.com/cdn/shop/products/Z-Parts_11.5inchDDGOVOuterBarrel_ForTokyoMaruiM4MWSSeries_BLK_1_651c69f4-8095-4a0f-8fd7-c1d41140b23c.webp?v=1673183028&width=950)
![[Z-Parts] Aluminium11.5inch DD GOV Outer Barrel [For Tokyo Marui M4 MWS Series][BLK]](http://www.sixmm.com/cdn/shop/products/Z-Parts_11.5inchDDGOVOuterBarrel_ForTokyoMaruiM4MWSSeries_BLK_2_56a642b1-c0e4-4b60-bd5d-5062885e6e6a.webp?v=1673183028&width=950)
![[Z-Parts] Steel 20 Inch Outer Barrel For VFC HK417 GBB Rifle](http://www.sixmm.com/cdn/shop/products/1_8715748a-60ae-48a0-a4f0-33dda81e114b.jpg?v=1611729304&width=950)
![[Z-Parts] Steel 20 Inch Outer Barrel For VFC HK417 GBB Rifle](http://www.sixmm.com/cdn/shop/products/2_36872592-9a72-4854-b881-a5cf5c661e5d.jpg?v=1611729304&width=950)
![[Z-Parts] Steel Outer Barrel for WE SMG8 GBB](http://www.sixmm.com/cdn/shop/products/we-smg8-002-01.jpg?v=1611908312&width=950)
![[Z-Parts] Steel Outer Barrel for WE SMG8 GBB](http://www.sixmm.com/cdn/shop/products/we-smg8-002-02.jpg?v=1611908312&width=950)
![[Z-Parts] Outer Barrel Adapter for Marui AEG to WA GBB](http://www.sixmm.com/cdn/shop/products/z-kit-003-01.jpg?v=1611305056&width=950)
![[Z-Parts] Outer Barrel Adapter for Marui AEG to WA GBB](http://www.sixmm.com/cdn/shop/products/z-kit-003-02.jpg?v=1611305060&width=950)
![[Z-Parts] 14.5incah DD GOV Outer Barrel for VIPER M4 GBB (Blk)](http://www.sixmm.com/cdn/shop/products/3_206243c4-427b-46f7-8b75-3ee9ba28a019.jpg?v=1611809198&width=950)
![[Z-Parts] 14.5incah DD GOV Outer Barrel for VIPER M4 GBB (Blk)](http://www.sixmm.com/cdn/shop/products/4_027fc851-8491-4fec-9adb-6ffe6d7e4383.jpg?v=1611809198&width=950)
![[Z-Parts] 11.5inch DD GOV Outer Barrel [For Systema M4 PTW Series][BLK]](http://www.sixmm.com/cdn/shop/products/Z-Parts_11.5inchDDGOVOuterBarrel_ForSystemaM4PTWSeries_BLK_3.webp?v=1673182839&width=950)
![[Z-Parts] 11.5inch DD GOV Outer Barrel [For Systema M4 PTW Series][BLK]](http://www.sixmm.com/cdn/shop/products/Z-Parts_11.5inchDDGOVOuterBarrel_ForSystemaM4PTWSeries_BLK_2.webp?v=1673182839&width=950)
![[Z-Parts] 10.5 inch Steel Outer Barrel Set for KSC M4 GBB (Blk)](http://www.sixmm.com/cdn/shop/products/ksc-m4-001-01.jpg?v=1611560602&width=950)
![[Z-Parts] 10.5 inch Steel Outer Barrel Set for KSC M4 GBB (Blk)](http://www.sixmm.com/cdn/shop/products/ksc-m4-001-02.jpg?v=1611560605&width=950)
![[Z-Parts] 16 inch Steel Outer Barrel for VFC HK417 GBB Rifle (Blk)](http://www.sixmm.com/cdn/shop/products/1_24b5192e-3ad2-474f-a60b-fe2101f3466d.jpg?v=1611561820&width=950)
![[Z-Parts] 16 inch Steel Outer Barrel for VFC HK417 GBB Rifle (Blk)](http://www.sixmm.com/cdn/shop/products/2_3f93b1d5-85fb-473b-8287-60a25dfa54a0.jpg?v=1611561820&width=950)
![[Z-Parts] 16.5 inch Steel Outer Barrel for WE MSK/ACR GBB](http://www.sixmm.com/cdn/shop/products/we-acr-004-1.jpg?v=1611562033&width=950)
![[Z-Parts] 16.5 inch Steel Outer Barrel for WE MSK/ACR GBB](http://www.sixmm.com/cdn/shop/products/we-acr-004-2.jpg?v=1611562033&width=950)
