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.
![[5KU] Aluminium GBB Outer Barrel[Tokyo Marui M4 MWS Series][10.3inch]](http://www.sixmm.com/cdn/shop/products/5KU_AluminiumGBBOuterBarrel_TokyoMaruiM4MWSSeries_10_1.jpg?v=1660309579&width=950)
![[5KU] Aluminium GBB Outer Barrel[Tokyo Marui M4 MWS Series][10.3inch]](http://www.sixmm.com/cdn/shop/products/5KU_AluminiumGBBOuterBarrel_TokyoMaruiM4MWSSeries_10_2.jpg?v=1660309579&width=950)
![[5KU] Aluminium GBB Outer Barrel[Tokyo Marui M4 MWS Series][7inch]](http://www.sixmm.com/cdn/shop/products/5KU_AluminiumGBBOuterBarrel_TokyoMaruiM4MWSSeries_7inch_2.jpg?v=1620050010&width=950)
![[5KU] Aluminium GBB Outer Barrel[Tokyo Marui M4 MWS Series][7inch][5KU] Aluminium GBB Outer Barrel[Tokyo Marui M4 MWS Series][7inch]](http://www.sixmm.com/cdn/shop/products/11194__5KU__Aluminium_GBB_Outer_Barrel_Tokyo_Marui_M4_MWS_Series_7inch__2_1.jpg?v=1620050013&width=950)
![[5KU] Aluminium GBB Outer Barrel[Tokyo Marui M4 MWS Series][11.5inch]](http://www.sixmm.com/cdn/shop/products/11198__5KU__Aluminium_GBB_Outer_Barrel_Tokyo_Marui_M4_MWS_Series_11.5inch_1.jpg?v=1610514699&width=950)
![[5KU] Aluminium GBB Outer Barrel[Tokyo Marui M4 MWS Series][11.5inch]](http://www.sixmm.com/cdn/shop/products/11198__5KU__Aluminium_GBB_Outer_Barrel_Tokyo_Marui_M4_MWS_Series_10inch__1_1.jpg?v=1610514705&width=950)
![[Angry Gun] Steel Outer Barrel Nut Spacer[For Tokyo Marui M4 MWS GBB Series][BLK]](http://www.sixmm.com/cdn/shop/products/AngryGun_SteelOuterBarrelNutSpacer_ForTokyoMaruiM4MWSGBBSeries_BLK.jpg?v=1641968098&width=950)
![[5KU] Aluminium GBB Outer Barrel[Tokyo Marui M4 MWS Series][8.7inch]](http://www.sixmm.com/cdn/shop/products/11195__5KU__Aluminium_GBB_Outer_Barrel_Tokyo_Marui_M4_MWS_Series_8.7inch_1.jpg?v=1610514916&width=950)
![[5KU] Aluminium GBB Outer Barrel[Tokyo Marui M4 MWS Series][8.7inch]](http://www.sixmm.com/cdn/shop/products/11195__5KU__Aluminium_GBB_Outer_Barrel_Tokyo_Marui_M4_MWS_Series_8.7inch__2_1.jpg?v=1610514919&width=950)
![[5KU] Aluminium GBB Outer Barrel[Tokyo Marui M4 MWS Series][10inch]](http://www.sixmm.com/cdn/shop/products/5KU_ALUMINIUMGBBOUTERBARREL_TOKYOMARUIM4MWSSERIES_10INCH.jpg?v=1617953561&width=950)
![[5KU] Aluminium GBB Outer Barrel[Tokyo Marui M4 MWS Series][10inch]](http://www.sixmm.com/cdn/shop/products/5KU_ALUMINIUMGBBOUTERBARREL_TOKYOMARUIM4MWSSERIES_10INCH_1.jpg?v=1617953561&width=950)
![[Z-Parts] DD GOV 14.5inch Steel Outer Barrel for Marui M4 GBB](http://www.sixmm.com/cdn/shop/products/1_6484ce49-b98a-45aa-b446-07532a84a0a4.jpg?v=1611817515&width=950)
![[Z-Parts] DD GOV 14.5inch Steel Outer Barrel for Marui M4 GBB](http://www.sixmm.com/cdn/shop/products/outer-barrel004_c334d2f3-51fe-453b-a182-3090a200a3d9.jpg?v=1611817516&width=950)
![[Z-Parts] MK16 DD GOV 10.3 inch Outer Barrel for Marui MWS GBB](http://www.sixmm.com/cdn/shop/products/outer-barrel007.jpg?v=1611304976&width=950)
![[Z-Parts] MK16 DD GOV 10.3 inch Outer Barrel for Marui MWS GBB](http://www.sixmm.com/cdn/shop/products/1_a6c70cae-3e07-4853-9973-5f2650d56b0e.jpg?v=1611304983&width=950)
![[Angry Gun] L119A 10inch & 15.7inch Outer Barrel Set for Tokyo Marui M4 MWS GBBR [BLK]](http://www.sixmm.com/cdn/shop/products/AngryGun_L119A10inch_15.7inchOuterBarrelSetforTokyoMaruiM4MWSGBBR_BLK_1.jpg?v=1618387567&width=950)
![[Angry Gun] L119A 10inch & 15.7inch Outer Barrel Set for Tokyo Marui M4 MWS GBBR [BLK]](http://www.sixmm.com/cdn/shop/products/AngryGun_L119A10inch_15.7inchOuterBarrelSetforTokyoMaruiM4MWSGBBR_BLK_2.jpg?v=1618387567&width=950)
![[Z-Parts] 14.5 inch Steel Outer Barrel Set[For Tokyo Marui M4 MWS GBB]](http://www.sixmm.com/cdn/shop/files/marui-m4-004-01.webp?v=1692614195&width=950)
![[Z-Parts] 14.5 inch Steel Outer Barrel Set[For Tokyo Marui M4 MWS GBB]](http://www.sixmm.com/cdn/shop/files/marui-m4-004-02.webp?v=1692614199&width=950)
![[Angry Gun] BC* 11.5inch Outer Barrel Set[Tokyo Marui MWS M4 GBB]](http://www.sixmm.com/cdn/shop/products/AngryGun_BC11.5inchOuterBarrelSet_TokyoMaruiMWSM4GBB.jpg?v=1646302245&width=950)
![[Angry Gun] BC* 11.5inch Outer Barrel Set[Tokyo Marui MWS M4 GBB]](http://www.sixmm.com/cdn/shop/products/AngryGun_BC11.5inchOuterBarrelSet_TokyoMaruiMWSM4GBB_1.jpg?v=1646302530&width=950)
![[C&C Tac] CNC Barrel Extension [For Marui TM MWS / MTR GBB Series]](http://www.sixmm.com/cdn/shop/files/1_77a28a47-f1ed-4f18-88a3-98ac527e44ea.jpg?v=1724650128&width=950)
![[C&C Tac] CNC Barrel Extension [For Marui TM MWS / MTR GBB Series]](http://www.sixmm.com/cdn/shop/files/2_57e8ce86-ad16-48a6-9472-32b930ff0627.jpg?v=1724650128&width=950)
![[5KU] Aluminium GBB Outer Barrel[Tokyo Marui M4 MWS Series][14.5inch]](http://www.sixmm.com/cdn/shop/products/5KU_AluminiumGBBOuterBarrel_TokyoMaruiM4MWSSeries_14.5inch.jpg?v=1635510423&width=950)
![[5KU] Aluminium GBB Outer Barrel[Tokyo Marui M4 MWS Series][12.5inch]](http://www.sixmm.com/cdn/shop/products/5KU_AluminiumGBBOuterBarrel_TokyoMaruiM4MWSSeries_12.5inch.jpg?v=1635510755&width=950)
![[BJTAC] 10.3 inch Colt STYLE Outer Barrel [For MWS Series]](http://www.sixmm.com/cdn/shop/files/1_5fdb957a-8b64-48a1-957f-8fe91776513f.jpg?v=1704528354&width=950)
![[MadDog] Lightweight Aluminium Outer Barrel Base[For Tokyo Marui M4 / MTR MWS Series][3.5inch][BLK]](http://www.sixmm.com/cdn/shop/files/93fdd9b9-0177-430c-aa90-77204946f24f.jpg?v=1704271766&width=950)
![[MadDog] Lightweight Aluminium Outer Barrel Base[For Tokyo Marui M4 / MTR MWS Series][3.5inch][BLK]](http://www.sixmm.com/cdn/shop/files/3d44de35-f836-4fd5-87a7-ca22f82b9f63.jpg?v=1704271766&width=950)
![[Z-Parts] 10.5 inch Steel Outer Barrel Set for Marui M4A1 MWS GBB](http://www.sixmm.com/cdn/shop/products/marui-m4-008-01.jpg?v=1611738014&width=950)
![[Z-Parts] 10.5 inch Steel Outer Barrel Set for Marui M4A1 MWS GBB](http://www.sixmm.com/cdn/shop/products/marui-m4-008-02.jpg?v=1611738014&width=950)
![[MadDog] 10.3 inch Aluminum Outer Barrel Set[For Tokyo Marui M4 MWS GBB Series]](http://www.sixmm.com/cdn/shop/products/MadDog_10.3inchSteelOuterBarrelSet_ForTokyoMaruiM4MWSGBBSeries_2.jpg?v=1659091390&width=950)
![[MadDog] 10.3 inch Aluminum Outer Barrel Set[For Tokyo Marui M4 MWS GBB Series]](http://www.sixmm.com/cdn/shop/products/MadDog_10.3inchSteelOuterBarrelSet_ForTokyoMaruiM4MWSGBBSeries_3.jpg?v=1659091390&width=950)
![[Z-Parts] DD GOV 10.3inch Steel Outer Barrel for Marui M4 GBB](http://www.sixmm.com/cdn/shop/products/4_df0ca63c-b09e-442d-baf6-7a1fa8c8f6f9.jpg?v=1611648445&width=950)
![[Z-Parts] DD GOV 10.3inch Steel Outer Barrel for Marui M4 GBB](http://www.sixmm.com/cdn/shop/products/outer-barrel007_1e931da9-8a9b-48ea-b9f4-6d8ad9bb99da.jpg?v=1611648445&width=950)
![[Z-Parts] 10.5inch Outer Barrel Set for Marui GBB](http://www.sixmm.com/cdn/shop/products/marui-m4-008-01_38f30011-a56c-45a5-bd67-aba7a9f85f81.jpg?v=1611806280&width=950)
![[Z-Parts] 10.5inch Outer Barrel Set for Marui GBB](http://www.sixmm.com/cdn/shop/products/marui-m4-008-02_dd3bbf48-048d-44b3-99a7-f0463a3ebfd3.jpg?v=1611806280&width=950)
![[MadDog] 14.5 inch Aluminum Outer Barrel Set[For Tokyo Marui M4 MWS GBB Series]](http://www.sixmm.com/cdn/shop/files/MadDog_14.5inchAluminumOuterBarrelSet_ForTokyoMaruiM4MWSGBBSeries_1.jpg?v=1731713261&width=950)
![[MadDog] 14.5 inch Aluminum Outer Barrel Set[For Tokyo Marui M4 MWS GBB Series]](http://www.sixmm.com/cdn/shop/files/MadDog_14.5inchAluminumOuterBarrelSet_ForTokyoMaruiM4MWSGBBSeries_3.jpg?v=1731713261&width=950)
![[MadDog] SI Style Aluminium Outer Barrel Set[For Tokyo Marui M4 MWS Series][BLK]](http://www.sixmm.com/cdn/shop/files/MadDog_SIStyleAluminiumOuterBarrelSet_ForTokyoMaruiM4MWSSeries_BLK.png?v=1749539022&width=950)
![[MadDog] Full Steel Outer Barrel [10.3 inch MK18 MOD 1 Style][For Tokyo Marui MWS Series]](http://www.sixmm.com/cdn/shop/files/MadDog_TokyoMaruiMWSOuterBarrel_10.3inchMK14MK16Style_4.jpg?v=1723064083&width=950)
![[MadDog] Full Steel Outer Barrel [10.3 inch MK18 MOD 1 Style][For Tokyo Marui MWS Series]](http://www.sixmm.com/cdn/shop/files/MadDog_TokyoMaruiMWSOuterBarrel_10.3inchMK14MK16Style_1.jpg?v=1723064083&width=950)
![[BJTAC] COLT Style Heavy Outer Barrel [For MWS Series]](http://www.sixmm.com/cdn/shop/files/Untitled-1_b15b6087-fe05-404d-9000-bc84991737ee.jpg?v=1704526567&width=950)
