5KU is a Taiwanese airsoft brand established in 2006. They manufacture a wide range of upgrade parts and accessories for airsoft guns, including outer barrels, internal parts, and rail systems. They are well-known for their external parts for AK, M4, and Hi-Capa series airsoft guns.
If you're looking for accessories to upgrade the look of your airsoft gun, be sure to check out 5KU!
This is an outer barrel for the Tokyo Marui M4A1 MWS GBB. It is a 16-inch rifle-sized aluminum barrel with a -14mm aperture. This product is for advanced users and...
This is a 16-inch outer barrel for the Tokyo Marui M4A1 MWS GBB. It is made of aluminum and is 14mm thick. This product is for advanced users and requires...
This is an outer barrel for the Tokyo Marui M4A1 MWS GBB. It is a 20-inch rifle-sized aluminum barrel with a -14mm aperture. This product is for advanced users and...
This trigger shoe is compatible with the Tokyo Marui Hi-CAPA. By using it in conjunction with the separately sold Module Trigger Base, you can customize it with your preferred color...
This is a Type 1 outer barrel for the 5KU Hi-Capa 4.3. The tip of the outer barrel can be fitted with an 11mm positive-threaded silencer or tracer. Compatible with...
This is a Type 1 outer barrel for the 5KU Hi-Capa 4.3. The tip of the outer barrel can be fitted with an 11mm positive-threaded silencer or tracer. Compatible with...
This is a Type 1 outer barrel for the 5KU Hi-Capa 4.3. The tip of the outer barrel can be fitted with an 11mm positive-threaded silencer or tracer. Compatible with...
This is a 6-position stock pipe compatible with the M4 GBB. The position numbers are marked. [Notes] This product is for advanced users. It is recommended for those who can...
This is a custom part from airsoft parts manufacturer 5KU. 【overview】 This replica is an exterior part for airsoft guns that reproduces the SLR Rifleworks Synergy Linear Hybrid Comp. While...
This is a custom part from airsoft parts manufacturer 5KU. 【overview】 This replica is an exterior part for airsoft guns that reproduces the SLR Rifleworks Synergy Linear Hybrid Comp. While...
This is a custom part from airsoft parts manufacturer 5KU. 【overview】 This product is a Blank Hollow design exterior part for airsoft guns and is compatible with Tokyo Marui's Hi-Capa...
This is a custom part from airsoft parts manufacturer 5KU. 【overview】 This product is a Blank Hollow design exterior part for airsoft guns and is compatible with Tokyo Marui's Hi-Capa...
This is a custom part from airsoft parts manufacturer 5KU. 【overview】 This product is an exterior part for airsoft guns with a Rhombus Knurled design. It is made of stainless...
This is a custom part from airsoft parts manufacturer 5KU. 【overview】 This product is an exterior part for airsoft guns with a Rhombus Knurled design. It is made of stainless...
This is a custom part from airsoft parts manufacturer 5KU. 【overview】 This product is an exterior part for airsoft guns with a Rhombus Knurled design. It is made of stainless...
This is a custom part from airsoft parts manufacturer 5KU. 【overview】 This replica is an exterior part for airsoft guns that reproduces the LANTAC 9INE. It is made of stainless...
This is a custom part from airsoft parts manufacturer 5KU. 【overview】 This replica is an exterior part for airsoft guns that reproduces the LANTAC 9INE. It is made of stainless...
This is a custom part from airsoft parts manufacturer 5KU. 【overview】 This replica is an exterior part for airsoft guns that reproduces the LANTAC 9INE. It is made of stainless...
This is a set of custom CNC aluminum slide and chassis compatible with the Tokyo Marui Hi-Capa 5.1. The combination of a black slide, silver outer barrel, and distinctive compensator...
This set includes a SureFire-type Warden blast diffuser and a 4-prong flash hider. The blast diffuser and flash hider are made of durable aluminum and steel. The hider features a...
A minimalist folding stock that can be attached to models with a Picatinny interface stock base. Designed for functionality, the Minimalist stock provides a stable shoulder fit when unfolded and...
A thin type stock that can be attached to models with a Picatinny interface stock base. The stock is connected to the base via a Picatinny rail, making it very...
This is a MINIMALIST PLUS style folding stock made by 5KU. A minimalist folding stock that can be attached to models with a Picatinny interface stock base. Designed for functionality,...
This aluminum recoil plug is compatible with the Tokyo Marui Hi-Capa 5.1. It features hollowed-out sides for weight reduction. [Notes] This product is an airsoft gun part made overseas. Please...
![[5KU] Tokyo Marui M4A1 MWS Outer Barrel -14mm 16-inch](http://rock-et.jp/cdn/shop/files/mws-10_1e3df77a-b33d-4232-807a-1a132aa17164_respimgsize.jpg?v=1774329580)
![[5KU] Tokyo Marui M4A1 MWS Outer Barrel -14mm 16-inch](http://rock-et.jp/cdn/shop/files/mws-11_a0a431dc-b33f-4d7c-81fe-aea3abe3fa2a_respimgsize.jpg?v=1774329526)
![[5KU] Tokyo Marui M4A1 MWS Outer Barrel - 14mm specification 20inch](http://rock-et.jp/cdn/shop/files/mws-14_31403600-3059-4a24-9658-44ca0a329d2b_respimgsize.jpg?v=1774329482)
![[5KU] Hi-Capa 4.3 Outer Barrel Type 1 Model GD](http://rock-et.jp/cdn/shop/files/gb-550-gd_06ddf4d6-784c-4f16-8c1c-f0f26905e358_respimgsize.jpg?v=1774843983)
![[5KU] Hi-Capa 4.3 Outer Barrel Type 1 Model GN](http://rock-et.jp/cdn/shop/files/gb-550-gn_cfe7c8cb-6d0a-4312-8237-3a129e9c3c85_respimgsize.jpg?v=1774843945)
![[5KU] Hi-Capa 4.3 Outer Barrel Type 1 Model PU](http://rock-et.jp/cdn/shop/files/gb-550-pu_b46e67d3-9295-4851-b6d0-0bca56533f54_respimgsize.jpg?v=1774843905)
![[5KU] 6-Position Stock Pipe Marking (M4 GBB Compatible)](http://rock-et.jp/cdn/shop/files/gb-101_99d38a41-690d-4059-8985-cd444b84ee76_respimgsize.jpg?v=1774328858)
![[5KU] SLR Synergy Linear Type Compensator TG 14mm Left-Hand Thread Compatible](http://rock-et.jp/cdn/shop/files/slr-01-tg_ddd34dd5-c0a4-4653-a483-df0213ed9a37_respimgsize.jpg?v=1774329204)
![[5KU] SLR Synergy Linear Type Compensator GD 14mm Reverse Thread Compatible](http://rock-et.jp/cdn/shop/files/slr-01-gd_90e1b4db-82ed-4b49-b87b-8da5741979db_respimgsize.jpg?v=1774328983)
![[5KU] Blank Hollow Magwell SV for Tokyo Marui Hi-Capa](http://rock-et.jp/cdn/shop/files/gb-589-sv_6b941275-284d-4d5f-a9d0-5099464a60c2_respimgsize.jpg?v=1774335574)
![[5KU] Blank Hollow Magwell BK Compatible with Tokyo Marui Hi-Capa](http://rock-et.jp/cdn/shop/files/gb-589-bk_9da634d6-85b0-4d8c-8042-8a8fa5cceb99_respimgsize.jpg?v=1774335621)
![[5KU] Rhombus Knurled Type CNC Stainless Fluted Cover SV 14mm CCW Thread](http://rock-et.jp/cdn/shop/files/gb-578-sv_9b2b0190-d8a8-40ff-8e5d-11f71f38ad9e_respimgsize.jpg?v=1774335697)
![[5KU] Rhombus Knurled Type CNC Stainless Steel Flute Cover GD 14mm Reverse Thread Compatible](http://rock-et.jp/cdn/shop/files/gb-578-gd_bab8e929-e3c3-4fb2-9abc-7351c4774155_respimgsize.jpg?v=1774335730)
![[5KU] Rhombus Knurled Type CNC Stainless Steel Flute Cover, Black, 14mm, Reverse Thread Compatible](http://rock-et.jp/cdn/shop/files/gb-578-bk_51a2b1c7-3d1a-4903-bc17-b30ebfa038d9_respimgsize.jpg?v=1774335774)
![[5KU] LANTAC 9INE Type CNC Fluted Protector Cover SV for 14mm Counter-Clockwise Thread](http://rock-et.jp/cdn/shop/files/gb-577-sv_a9cb0592-b799-4151-893f-0d475d4a2c92_respimgsize.jpg?v=1774335821)
![[5KU] LANTAC 9INE Type CNC Fluted Protector Cover GD Compatible with 14mm CCW](http://rock-et.jp/cdn/shop/files/gb-577-gd_91cee569-86c4-4b99-90cc-1bd5665d5069_respimgsize.jpg?v=1774335853)
![[5KU] LANTAC 9INE Type CNC Fluted Barrel Protector Cover BK 14mm CCW Thread](http://rock-et.jp/cdn/shop/files/gb-577-bk_9a66e484-113b-4276-9ecb-4f47ba21834b_respimgsize.jpg?v=1774843389)
![[5KU] EX-01 Extra CNC Aluminum Slide Chassis Set, Black xSV (for Tokyo Marui Hi-Capa 5.1)](http://rock-et.jp/cdn/shop/files/gb-574-bksv_e080fda3-2851-4847-b394-f53a75dd5bc2_respimgsize.jpg?v=1774843517)
![[5KU] SF-Type Warden Blast Diffuser/4-Prong Flash Hider Set Ver.2 Black](http://rock-et.jp/cdn/shop/files/5ku-217-b-2_47963272-9e35-40d1-829f-a134c05a28fe_respimgsize.jpg?v=1774326332)
![[5KU] Minimalist Folding Stock (Compatible with Picatinny/20mm Rails)](http://rock-et.jp/cdn/shop/files/5ku-339_91ecc3ca-cda5-4407-8817-4577476a18c3_respimgsize.jpg?v=1774326818)
