Shipping Notice for USA Customers UPDATED 16th Jan., 2026
1. US import tariffs (duties) must be paid before the goods enter the United States. These charges are not refunded by the US government. Please make sure that the tariffs are paid in advance.
2. 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.
![***[Pro Arms] CNC Aluminium VFC Glock RMR Lightweight Mount Base[For Umarex GLOCK GBB Series]](http://www.sixmm.com/cdn/shop/files/ProArms_CNCAluminiumVFCGlockRMRLightweightMountBase_ForUmarexGLOCKGBBSeries_1.jpg?v=1684691539&width=950)
![***[Pro Arms] CNC Aluminium VFC Glock RMR Lightweight Mount Base[For Umarex GLOCK GBB Series]](http://www.sixmm.com/cdn/shop/files/ProArms_CNCAluminiumVFCGlockRMRLightweightMountBase_ForUmarexGLOCKGBBSeries_2.jpg?v=1684691539&width=950)
![Pro Arms Lower Frame Steel Pin Set[For Umarex G17 GEN.3 / GEN.4, G19 GEN.4, G18C GBB Series]](http://www.sixmm.com/cdn/shop/files/ProArmsLowerFrameSteelPinSet_ForUmarexG17GEN.3GEN.4_G19GEN.4_G18CGBBSeries.webp?v=1756801646&width=950)
![[Guns Modify] 125% Recoil / 140% Hammer Springs Set[For Tokyo Marui G Series Aluminum Slide]](http://www.sixmm.com/cdn/shop/files/GMF-GM0397_1400x_6d790eb8-5825-4621-8707-170e1a8846a6.webp?v=1700043017&width=950)
![[Guns Modify] 125% Recoil / 140% Hammer Springs Set[For Tokyo Marui G Series Aluminum Slide]](http://www.sixmm.com/cdn/shop/products/GM0347-2L.jpg?v=1700043017&width=950)
![[PRO ARMS] 130% Hammer Spring [For Marui SAIGA 12K/SBS]](http://www.sixmm.com/cdn/shop/files/rh0302.jpg?v=1758266492&width=950)
![[Pro Arms] 130% Hammer Spring [For Tokyo Marui MP7 GBB Series]](http://www.sixmm.com/cdn/shop/files/ProArms_130_HammerSpring_ForTokyoMaruiMP7GBBSeries.jpg?v=1737329015&width=950)
![[Pro Arms] 130% Loading Nozzle Return Spring [For Tokyo Marui MP7 GBB Series]](http://www.sixmm.com/cdn/shop/files/ProArms_130_LoadingNozzleReturnSpring_ForTokyoMaruiMP7GBBSeries.jpg?v=1737328757&width=950)
![[Pro Arms] 130% Loading Nozzle Return Spring [For Tokyo Marui SAIGA-12K / SBS GBB Series]](http://www.sixmm.com/cdn/shop/files/1_8edc9dcc-cd40-4eab-a56c-aaa527836618.jpg?v=1719460663&width=950)
![[Pro Arms] 130% Loading Nozzle Return Spring[For Tokyo Marui SAIGA GBB Series][2pcs/Set]](http://www.sixmm.com/cdn/shop/files/PROARMS-TM-SAIGA-08-01.jpg?v=1758018811&width=950)
![[Pro Arms] 130% Loading Nozzle Returning Spring[For Tokyo Marui P320 / M17 GBB Series]](http://www.sixmm.com/cdn/shop/files/PROARMS-VFC-PDP-001.jpg?v=1768898338&width=950)
![[PRO ARMS] 130% Loading Nozzle Returning Spring[For VFC M733 GBB Series]](http://www.sixmm.com/cdn/shop/files/PROARMS-VFC-M733-01.jpg?v=1768897748&width=950)
![[PRO ARMS] 130% Loading Nozzle Returning Spring[For VFC M733 GBB Series]](http://www.sixmm.com/cdn/shop/files/PROARMS-VFC-M733-02.jpg?v=1768897748&width=950)
![[Pro Arms] 130% Nozzle Return Spring Set[For EMG VFC SI P365 GBB Series][SV]](http://www.sixmm.com/cdn/shop/files/ProArms_130_NozzleReturnSpringSet_ForEMGVFCSIP365GBBSeries_SV_35fc9977-e6f4-4dae-88e6-d61849e402e3.jpg?v=1749456779&width=950)
![[Pro Arms] 130% Nozzle Return Spring Set[For EMG VFC SI P365 GBB Series][SV]](http://www.sixmm.com/cdn/shop/files/ProArms_130_NozzleReturnSpringSet_ForEMGVFCSIP365GBBSeries_SV.jpg?v=1749456779&width=950)
![[Pro Arms] 130% Stainless Steel Recoil Rod[For Tokyo Marui MP7A1 GBB Series]](http://www.sixmm.com/cdn/shop/files/ProArms_130_StainlessSteelRecoilRod_ForTokyoMaruiMP7A1GBBSeries_1.webp?v=1746645053&width=950)
![[Pro Arms] 130% Stainless Steel Recoil Rod[For Tokyo Marui MP7A1 GBB Series]](http://www.sixmm.com/cdn/shop/files/ProArms_130_StainlessSteelRecoilRod_ForTokyoMaruiMP7A1GBBSeries_2.webp?v=1746645053&width=950)
![[Pro Arms] 130% Steel Spring Guide Rod[For SIG AIR M17 GBB Series]](http://www.sixmm.com/cdn/shop/files/ProArms_130_SteelSpringGuideRod_ForSIGAIRM17GBBSeries_3.jpg?v=1741124942&width=950)
![[Pro Arms] 130% Steel Spring Guide Rod[For SIG AIR M17 GBB Series]](http://www.sixmm.com/cdn/shop/files/ProArms_130_SteelSpringGuideRod_ForSIGAIRM17GBBSeries_2.jpg?v=1741124942&width=950)
![[Pro Arms] 130% Steel Spring Guide Rod[For SIG AIR M18 / XCARRY GBB Series]](http://www.sixmm.com/cdn/shop/files/ProArms_130_SteelSpringGuideRod_ForSIGAIRM18XCARRYGBBSeries.jpg?v=1741124545&width=950)
![[Pro Arms] 130%-160% Recoil Spring [Fokyo Marui SAIGA-12K / SBS GBB Series]](http://www.sixmm.com/cdn/shop/files/1_2c6fff33-e455-4272-b704-5699b71772c7.jpg?v=1719461572&width=950)
![[Pro Arms] 130%-160% Recoil Spring [Fokyo Marui SAIGA-12K / SBS GBB Series]](http://www.sixmm.com/cdn/shop/files/222_fb86749b-ca39-4f2d-8b24-0df040ee0800.jpg?v=1719461572&width=950)
![[COWCOW Technology] 140% Steel Hammer Spring for Tokyo Marui G Series GBB Pistol[SV]](http://www.sixmm.com/cdn/shop/products/COWCOWTechnology_140_SteelHammerSpringforTokyoMaruiGSeriesGBBPistol_SV.jpg?v=1642655950&width=950)
![[Pro Arms] 220mm Aluminium Airsoft Outer Barrel[Short Ver.][For Tokyo Marui SAIGA GBB Series]](http://www.sixmm.com/cdn/shop/files/ProArms_220mmAluminiumAirsoftOuterBarrel_ShortVer._ForTokyoMaruiSAIGAGBBSeries_1.jpg?v=1737327685&width=950)
![[Pro Arms] 220mm Aluminium Airsoft Outer Barrel[Short Ver.][For Tokyo Marui SAIGA GBB Series]](http://www.sixmm.com/cdn/shop/files/ProArms_220mmAluminiumAirsoftOuterBarrel_ShortVer._ForTokyoMaruiSAIGAGBBSeries_1.webp?v=1737327685&width=950)
![[Pro Arms] Acro Mount Base [For VFC [Umarex] G17 Gen 3, Gen 4/ G19 Gen 3, G18C Series][BLK]](http://www.sixmm.com/cdn/shop/files/11a.jpg?v=1737710823&width=950)
![[Pro Arms] Acro Mount Base [For VFC [Umarex] G17 Gen 3, Gen 4/ G19 Gen 3, G18C Series][BLK]](http://www.sixmm.com/cdn/shop/files/2_942c70c8-5e14-4e8a-93db-8246857f692b.jpg?v=1737710819&width=950)
![[Pro Arms] Acro Mount Base [For VFC [Umarex] G19X / G19 Gen 4 / G17 Gen 5 / G45 Series][BLK]](http://www.sixmm.com/cdn/shop/files/11B.jpg?v=1737710823&width=950)
![[PRO ARMS] Airsoft Aluminium Outer Barrel[For EMG SI P365 GBB Series][BLK]](http://www.sixmm.com/cdn/shop/files/PROARMS_AirsoftAluminiumOuterBarrel_ForEMGSIP365GBBSeries_BLK_2.jpg?v=1742898713&width=950)
![[PRO ARMS] Airsoft Aluminium Outer Barrel[For EMG SI P365 GBB Series][BLK]](http://www.sixmm.com/cdn/shop/files/PROARMS_AirsoftAluminiumOuterBarrel_ForEMGSIP365GBBSeries_BLK_3.jpg?v=1742898713&width=950)
![[Pro Arms] Airsoft Steel Threaded Protector[-14MM CCW][BLK]](http://www.sixmm.com/cdn/shop/files/ProArms_AirsoftSteelThreadedProtector_-14MMCCW_BLK_3.jpg?v=1737588084&width=950)
![[Pro Arms] Airsoft Steel Threaded Protector[-14MM CCW][BLK]](http://www.sixmm.com/cdn/shop/files/ProArms_AirsoftSteelThreadedProtector_-14MMCCW_BLK_1.jpg?v=1737588084&width=950)
![[Pro Arms] Aluminium SCA Magwell[For Umarex GLOCK 17 GEN.4 GBB Series][BLK]](http://www.sixmm.com/cdn/shop/files/ProArms_AluminiumSCAMagwell_ForUmarexGLOCK17GEN.4GBBSeries_BLK_2.jpg?v=1737589621&width=950)
![[Pro Arms] Aluminium SCA Magwell[For Umarex GLOCK 17 GEN.4 GBB Series][BLK]](http://www.sixmm.com/cdn/shop/files/ProArms_AluminiumSCAMagwell_ForUmarexGLOCK17GEN.4GBBSeries_BLK.webp?v=1737589621&width=950)
