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.
![[Army Force] 2inch Stubby Outer Barrel Adapter Base[For WA M4 GBB Series]](http://www.sixmm.com/cdn/shop/products/ArmyForce_2inchStubbyOuterBarrelAdapterBase_ForWAM4GBBSeries_1.jpg?v=1624341699&width=950)
![[Army Force] 2inch Stubby Outer Barrel Adapter Base[For WA M4 GBB Series]](http://www.sixmm.com/cdn/shop/products/ArmyForce_2inchStubbyOuterBarrelAdapterBase_ForWAM4GBBSeries_2.jpg?v=1624341701&width=950)
![[5KU] WA 9inch M4 GBB Aluminum Outer Barrel](http://www.sixmm.com/cdn/shop/products/5KU_WA9inchM4GBBAluminumOuterBarrel_2.jpg?v=1636010322&width=950)
![[5KU] WA 9inch M4 GBB Aluminum Outer Barrel](http://www.sixmm.com/cdn/shop/products/5KU_WA9inchM4GBBAluminumOuterBarrel_1.jpg?v=1636010321&width=950)
![[Z-Parts] 10.5 inch Steel Outer Barrel Set[For Tokyo Marui M4 MWS GBB]](http://www.sixmm.com/cdn/shop/files/marui-m4-007-02.webp?v=1711282597&width=950)
![[Z-Parts] 10.5 inch Steel Outer Barrel Set[For Tokyo Marui M4 MWS GBB]](http://www.sixmm.com/cdn/shop/files/marui-m4-007-03.webp?v=1711282597&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)
![[Golden Eagle] Alloy Metal Barrel Extension[For WA M4 GBB Series]](http://www.sixmm.com/cdn/shop/products/GoldenEagle_AlloyMetalBarrelExtension_ForWAM4GBBSeries_1.jpg?v=1622531352&width=950)
![[Golden Eagle] Alloy Metal Barrel Extension[For WA M4 GBB Series]](http://www.sixmm.com/cdn/shop/products/GoldenEagle_AlloyMetalBarrelExtension_ForWAM4GBBSeries_2.jpg?v=1622531354&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)
![[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] 14.5 inch DD GOV Outer Barrel for GHK M4 GBB [BLK]](http://www.sixmm.com/cdn/shop/products/1_43d5a10d-593f-46ba-8076-60f40ee15ef2.jpg?v=1611304313&width=950)
![[Z-Parts] 14.5 inch DD GOV Outer Barrel for GHK M4 GBB [BLK]](http://www.sixmm.com/cdn/shop/products/outer-barrel005.jpg?v=1611304330&width=950)
![[Angry Gun] Tokyo Marui MWS GBBR Airsoft Outer Barrel [14.5 inch MK14 / MK16 Style]](http://www.sixmm.com/cdn/shop/products/AG-20220203-145_3.jpg?v=1678450829&width=950)
![[Angry Gun] Tokyo Marui MWS GBBR Airsoft Outer Barrel [14.5 inch MK14 / MK16 Style]](http://www.sixmm.com/cdn/shop/products/AG-20220203-145_2.jpg?v=1678450828&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] DD GOV 10.3inch Steel Outer Barrel for GHK M4 GBB](http://www.sixmm.com/cdn/shop/products/1_790e2e50-6b4e-48b2-9245-3f7791adf30e.jpg?v=1611648208&width=950)
![[Z-Parts] DD GOV 10.3inch Steel Outer Barrel for GHK M4 GBB](http://www.sixmm.com/cdn/shop/products/outer-barrel006.jpg?v=1611648208&width=950)
![[5KU] Aluminium M4 AEG / GBB Outer Barrel set[Silver]](http://www.sixmm.com/cdn/shop/products/5KU_GBBAEGM4OuterBarrelset_Silver.jpg?v=1635418500&width=950)
![[5KU] 14.5 Inch One Piece Outer Barrel [For WA M4 GBB Airsoft Series]](http://www.sixmm.com/cdn/shop/files/1_fa68e706-dc29-4a8b-98f7-0c765fd6dbee.jpg?v=1718078220&width=950)
![[5KU] 14.5 Inch One Piece Outer Barrel [For WA M4 GBB Airsoft Series]](http://www.sixmm.com/cdn/shop/files/2_64d2f7e1-feee-4ccf-b191-04eb0c99b8bf.jpg?v=1718078220&width=950)
![[Guns Modify] Light Weight GBB Outer Barrel Adapter[For WA M4 GBB Barrel to Tokyo Marui MWS GBB Barrel]](http://www.sixmm.com/cdn/shop/products/GunsModify_LightWeightGBBOuterBarrelAdapter_ForWAM4GBBBarreltoTokyoMaruiMWSGBBBarrel_2.jpg?v=1654178997&width=950)
![[Guns Modify] Light Weight GBB Outer Barrel Adapter[For WA M4 GBB Barrel to Tokyo Marui MWS GBB Barrel]](http://www.sixmm.com/cdn/shop/products/GunsModify_LightWeightGBBOuterBarrelAdapter_ForWAM4GBBBarreltoTokyoMaruiMWSGBBBarrel_3.jpg?v=1654178997&width=950)
![[Angry Gun] Milspec Outer Barrel set [For Tokyo Marui M4 MWS Series]](http://www.sixmm.com/cdn/shop/products/AngryGun_MilspecOuterBarrelsetMaruiM4GBBMWS2018Version-1.jpg?v=1620636699&width=950)
![[Angry Gun] BC Style 14.5' Outer Barrel Set For TM MWS [BLK]](http://www.sixmm.com/cdn/shop/products/AngryGun_BCStyle14.5_OuterBarrelSetForTMMWS_BLK.jpg?v=1619685793&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)
![[Maple Leaf] Airsoft GBB Outer Barrel Adapter[From WA M4 Barrel to M4 MWS Barrel]](http://www.sixmm.com/cdn/shop/files/MapleLeaf_AirsoftGBBOuterBarrelAdapter_FromWAM4BarreltoM4MWSBarrel.jpg?v=1690988709&width=950)
![[MadDog] Aluminium M4 GBB Outer Barrel[For WA M4 GBB Series][14.5 inch]](http://www.sixmm.com/cdn/shop/products/MadDog_AluminiumM4GBBOuterBarrel_ForWAM4GBBSeries_14.5inch_3.jpg?v=1657116662&width=950)
![[MadDog] Aluminium M4 GBB Outer Barrel[For WA M4 GBB Series][14.5 inch]](http://www.sixmm.com/cdn/shop/products/MadDog_AluminiumM4GBBOuterBarrel_ForWAM4GBBSeries_14.5inch_2.jpg?v=1657116662&width=950)
![[MadDog] Steel Airsoft GBB Outer Barrel[10.5 inch][For WE M4 GBB Series]](http://www.sixmm.com/cdn/shop/files/20230915031039830.jpg?v=1744278311&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] 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)
![[Army Force] 2 Inch Stubby Outer Barrel [For M4 GBB Series][BLK]](http://www.sixmm.com/cdn/shop/files/blk_112cdda5-d141-4532-9638-59417987d4af.jpg?v=1719299121&width=950)
![[Revanchist Airsoft] Alumninium GBB Outer Barrel Set[For Tokyo Marui M4 MWS Series][11.5inch]](http://www.sixmm.com/cdn/shop/files/RevanchistAirsoft_AlumniniumGBBOuterBarrelSet_ForTokyoMaruiM4MWSSeries_11.5inch_2.jpg?v=1713334510&width=950)
![[Revanchist Airsoft] Alumninium GBB Outer Barrel Set[For Tokyo Marui M4 MWS Series][11.5inch]](http://www.sixmm.com/cdn/shop/files/RevanchistAirsoft_AlumniniumGBBOuterBarrelSet_ForTokyoMaruiM4MWSSeries_11.5inch_3.jpg?v=1713334510&width=950)
