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.
![[Alpha Parts] CNC Steel Forward Assist[For Systema M4 PTW Series]](http://www.sixmm.com/cdn/shop/products/AlphaParts_CNCSteelForwardAssist_ForSystemaM4PTWSeries_1.jpg?v=1613493290&width=950)
![[Alpha Parts] CNC Steel Forward Assist[For Systema M4 PTW Series]](http://www.sixmm.com/cdn/shop/products/AlphaParts_CNCSteelForwardAssist_ForSystemaM4PTWSeries_2.jpg?v=1613493290&width=950)
![[Alpha Parts] Steel Receiver Dummy Sear Pin Set[For Systema PTW M4 Series]](http://www.sixmm.com/cdn/shop/products/AlphaParts_SteelReceiverDummySearPinSet_ForSystemaPTWM4Series_1.jpg?v=1625368309&width=950)
![[Alpha Parts] Steel Receiver Dummy Sear Pin Set[For Systema PTW M4 Series]](http://www.sixmm.com/cdn/shop/products/AlphaParts_SteelReceiverDummySearPinSet_ForSystemaPTWM4Series_2.jpg?v=1625368311&width=950)
![[Z-parts] Forged Upper Receiver for SYSTEMA M4 10th Anniversary](http://www.sixmm.com/cdn/shop/products/upper-2-2-1.jpg?v=1611304785&width=950)
![[Z-parts] Forged Upper Receiver for SYSTEMA M4 10th Anniversary](http://www.sixmm.com/cdn/shop/products/upper-3-2-1.jpg?v=1611304791&width=950)
![[Alpha Parts] Dust Cover Set [For Systema M4 PTW Series]](http://www.sixmm.com/cdn/shop/products/AlphaParts_DustCoverSet_ForSystemaM4PTWSeries_2.jpg?v=1633411703&width=950)
![[Alpha Parts] Dust Cover Set [For Systema M4 PTW Series]](http://www.sixmm.com/cdn/shop/products/AlphaParts_DustCoverSet_ForSystemaM4PTWSeries_1.jpg?v=1633411703&width=950)
![[G&D] M4 Flat Top Receiver [For DTW / PTW M4 Series]](http://www.sixmm.com/cdn/shop/files/1_3fa12d59-7ea8-4fbd-be36-385f7cfaaaa7.jpg?v=1724400835&width=950)
![[G&D] M4 Flat Top Receiver [For DTW / PTW M4 Series]](http://www.sixmm.com/cdn/shop/files/2_4539aa42-73c0-419b-b4b6-c3135c4115af.jpg?v=1724400835&width=950)
![[Alpha Parts] Steel Bolt Stop Set [For Systema M4 PTW Series][Type B]](http://www.sixmm.com/cdn/shop/products/AlphaParts_SteelBoltStopSet_ForSystemaM4PTWSeries_TypeB_2.jpg?v=1650858029&width=950)
![[Alpha Parts] Steel Bolt Stop Set [For Systema M4 PTW Series][Type B]](http://www.sixmm.com/cdn/shop/products/AlphaParts_SteelBoltStopSet_ForSystemaM4PTWSeries_TypeB_1.jpg?v=1650858030&width=950)
![[Z-Parts] Forged Receiver Set for SYSTEMA M4 PTW AEG](http://www.sixmm.com/cdn/shop/products/systema-m4-007-_1.jpg?v=1611649110&width=950)
![[Z-Parts] Forged Receiver Set for SYSTEMA M4 PTW AEG](http://www.sixmm.com/cdn/shop/products/systema-m4-007-_2.jpg?v=1611649111&width=950)
![[Systema] Bolt Stop[For Systema M4 PTW Series]](http://www.sixmm.com/cdn/shop/products/Systema_BoltStop_ForSystemaM4PTWSeries_2.jpg?v=1664795038&width=950)
![[Systema] Bolt Stop[For Systema M4 PTW Series]](http://www.sixmm.com/cdn/shop/products/Systema_BoltStop_ForSystemaM4PTWSeries_1.jpg?v=1664795038&width=950)
![[Systema] Trigger/ Hammer Dummy Pin[4pcs/Set][For Systema PTW Series]](http://www.sixmm.com/cdn/shop/products/Systema_TriggerHammerDummyPin_4pcsSet_ForSystemaPTWSeries.jpg?v=1646663412&width=950)
![[G&D] Full Metal Upper Receiver [For Systema M4 PTW Series]](http://www.sixmm.com/cdn/shop/products/G_D_FullMetalUpperReceiver_ForG_DDTWSeries_3.jpg?v=1635246220&width=950)
![[G&D] Full Metal Upper Receiver [For Systema M4 PTW Series]](http://www.sixmm.com/cdn/shop/products/G_D_FullMetalUpperReceiver_ForG_DDTWSeries_1.jpg?v=1635246220&width=950)
![[G&D] M16A2 DTW Receiver Set W/ Hop Up and Motor Set[For Systema M4 PTW Series]](http://www.sixmm.com/cdn/shop/products/G_D_M16A2DTWReceiverSetWHopUpandMotorSet_ForSystemaM4PTWSeries.jpg?v=1663826218&width=950)
![[Alpha Parts] CNC Stainless Receiver Pin[For All M4 GBB/Systema PTW][B Type]](http://www.sixmm.com/cdn/shop/files/Untitled-2_fd4caa22-7efd-42ab-ac71-0598d2b40e06.jpg?v=1688109357&width=950)
![[Alpha Parts] CNC Stainless Receiver Pin[For All M4 GBB/Systema PTW][B Type]](http://www.sixmm.com/cdn/shop/files/Untitled-1_b144a7f0-1653-46e0-a9b0-5d09db9f4bb0.jpg?v=1688109357&width=950)
![[Systema] Trigger/ Hammer Dummy Pin [6pcs/Set][For Systema PTW Series]](http://www.sixmm.com/cdn/shop/files/Systema_TriggerHammerDummyPin_6pcsSet_ForSystemaPTWSeries.webp?v=1714734839&width=950)
![[Z-Parts] Upper Receiver Set for SYSTEMA 416 AEG](http://www.sixmm.com/cdn/shop/products/img_9671.jpg?v=1611733911&width=950)
![[Z-Parts] Upper Receiver Set for SYSTEMA 416 AEG](http://www.sixmm.com/cdn/shop/products/img_9674.jpg?v=1611733911&width=950)
![[Alpha Parts] BCM Style Aluminium Receiver Set[For Systema PTW M4 Series]](http://www.sixmm.com/cdn/shop/products/11392__Alpha_Parts__BCM_Style_Aluminium_Receiver_Set_For_Systema_PTW_M4_Series_1.jpg?v=1610438636&width=950)
![[Alpha Parts] BCM Style Aluminium Receiver Set[For Systema PTW M4 Series]](http://www.sixmm.com/cdn/shop/products/11392__Alpha_Parts__BCM_Style_Aluminium_Receiver_Set_For_Systema_PTW_M4_Series__4_1.jpg?v=1610438639&width=950)
![[Systema] Set-pin for Forward Assist Knob[For Systema M4 PTW]](http://www.sixmm.com/cdn/shop/products/9920__Systema__Set-pin_for_Forward_Assist_Knob_For_Systema_M4_PTW_1.jpg?v=1609905112&width=950)
![[Systema] Full-Auto shear dummy pin[For Systema PTW][2pcs/Set]](http://www.sixmm.com/cdn/shop/products/Systema_Full-Autosheardummypin_ForSystemaPTW_2pcsSet.jpg?v=1646663562&width=950)
![[Systema] The E Clap / E Ring [For The Airsoft M4 dust cover shaft]](http://www.sixmm.com/cdn/shop/products/Systema_E-ringsfordustcovershaft.jpg?v=1642161378&width=950)
![[Alpha Parts] 416D Conversion Kit[For Systema PTW Series][BLK]](http://www.sixmm.com/cdn/shop/files/AlphaParts_416DConversionKit_ForSystemaPTWSeries_BLK_4.jpg?v=1728899768&width=950)
![[Alpha Parts] 416D Conversion Kit[For Systema PTW Series][BLK]](http://www.sixmm.com/cdn/shop/files/AlphaParts_416DConversionKit_ForSystemaPTWSeries_BLK_1.jpg?v=1728899769&width=950)
![[Z-Parts] SYSTEMA M4 INFINITY Forged Receiver Set [Blank][BLK]](http://www.sixmm.com/cdn/shop/files/Untitled-3_d8ba9460-f2dc-4121-aa22-540c8c35d6b4.jpg?v=1689149774&width=950)
![[TW Nerf] CNC Steel Forward Assist[For Systema M4 PTW Series]](http://www.sixmm.com/cdn/shop/products/AlphaParts_CNCSteelForwardAssist_ForSystemaM4PTWSeries_2_490dc2a3-4fef-449a-a605-7aa8fd8b8a0b.jpg?v=1656510825&width=950)
![[TW Nerf] CNC Steel Forward Assist[For Systema M4 PTW Series]](http://www.sixmm.com/cdn/shop/products/AlphaParts_CNCSteelForwardAssist_ForSystemaM4PTWSeries_1_644e141d-cfd9-4ccf-9149-9812afed6255.jpg?v=1656510825&width=950)
![[Systema] Forward Assist Knob Spring[For SYSTEMA PTW M4 Series]](http://www.sixmm.com/cdn/shop/products/Systema_ForwardAssistKnobSpring_ForSYSTEMAPTWM4Series_1.jpg?v=1627044213&width=950)
![[Systema] Forward Assist Knob [For SYSTEMA PTW M4 Series]](http://www.sixmm.com/cdn/shop/products/Systema_ForwardAssistKnob_ForSYSTEMAPTWM4Series.jpg?v=1627044081&width=950)
![[Z-Parts] SYSTEMA M4 AEG Aluminium Forged Lower Receiver (BLK)](http://www.sixmm.com/cdn/shop/products/lower7-1-1.jpg?v=1611908702&width=950)
![[Z-Parts] SYSTEMA M4 AEG Aluminium Forged Lower Receiver (BLK)](http://www.sixmm.com/cdn/shop/products/lower9-1-1.jpg?v=1611908702&width=950)
