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5KU

5KU is a brand specializing in high-quality external parts and accessories for airsoft guns. Its product range covers M4, AK, and Hi-Capa GBB pistol platforms. The lineup includes everything from outer barrels and handguards and RIS mounts to SOCOM suppressor replicas, compensators, stocks, and ZenitCo-style parts for AK rifles, as well as precision-machined Hi-Capa components such as slides, frames, and other TM-standard parts. In short, 5KU offers high-quality, affordable parts for enthusiasts who value realistic appearance and technical precision — perfect for collectors, custom builders, and reenactors focused on Russian weapon systems. 5KU delivers an excellent price-to-performance ratio without the need to invest in premium brands at double the cost.

5KU is a well-known brand specializing in the production of quality external airsoft gun parts and accessories. Founded in 2006 in Taiwan, it has since earned a strong reputation for precise manufacturing, a wide product range, and a focus on both functional and aesthetic improvements of replica firearms. One of its major advantages is its affordable price compared to competing brands. The 5KU product range covers M4, AK, and Hi-Capa GBB platforms and includes outer barrels, handguards, RIS mounts, as well as SOCOM suppressor replicas, compensators, stocks, ZenitCo-inspired AK components, and precision-engineered Hi-Capa parts such as slides, frames, and other Tokyo Marui-standard parts.
5KU products are made from high-quality materials (typically aluminum and steel), ensuring durability, resistance to wear, and a perfect fit on your gun. The brand prioritizes compatibility with popular manufacturers such as CYMA, LCT, GHK, E&L, and Tokyo Marui.
Thanks to its extensive lineup, 5KU is popular among both beginners and advanced builders and custom enthusiasts. It allows for simple and efficient weapon customization without major modifications or compromises. In summary, 5KU provides affordable, high-quality external components for fans of realistic design and technical refinement, whether for collectors or reenactors focusing on Russian or Western weapon platforms. The brand offers an outstanding price/performance balance without needing to invest in premium-level alternatives.

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  • 12,69 € In Stock

    : 5KU

    5KU40

    5KU Metal Airsoft RIS Rail for M-LOK and Keymod Handguards in black. Length 75 mm with 5 slots. Allows mounting of RIS accessories such as PEQ boxes, flashlights, grips, and bipods on both M-LOK and Keymod systems. Includes mounting screws and nuts.

    12,69 €
    In Stock
  • 63,01 € In Stock

    : 5KU

    5KU32

    5KU SS-8 Folding Stock with RIS (1913) Mount in black. SS-8 features a straight, reinforced design with a wide fixed buttplate. For RIS stock mounts (1913 / M1913), compatible with MCX / MPX, DA STRIBOG SP10 A3 and RIS adapters for M4, MP5, and AK platforms. Lightweight skeleton-style design made from aluminum. QD sling mount holes. Folds to both...

    63,01 €
    In Stock
  • 63,01 € In Stock

    : 5KU

    5KU33

    5KU SS-8R Folding Stock with RIS (1913) Mount in black. SS-8R features an elevated cheek rest with a wide fixed buttplate. For RIS stock mounts (1913 / M1913), compatible with MCX / MPX, DA STRIBOG SP10 A3 and RIS adapters for M4, MP5, and AK platforms. Lightweight skeleton-style design made from aluminum. QD sling mount holes. Folds to both sides....

    63,01 €
    In Stock
  • 71,47 € In Stock

    : 5KU

    5KU34

    5KU AB-8 Folding Stock with RIS (1913) Mount in black. AB-8 features a straight skeleton design made of aluminum with a removable buttplate. For RIS stock ends (1913 / M1913), compatible with MCX / MPX, DA STRIBOG SP10 A3 and RIS adapters for M4, MP5, and AK platforms. Lightweight aluminum skeleton design. QD sling swivel sockets. Folds to both...

    71,47 €
    In Stock
  • 63,01 € In Stock

    : 5KU

    5KU35

    5KU AB-8R Folding Stock with RIS (1913) Mount in black. AB-8R features an elevated cheek rest and a removable buttplate. For RIS stock mounts (1913 / M1913), compatible with MCX / MPX, DA STRIBOG SP10 A3 and RIS adapters for M4, MP5, and AK platforms. Lightweight skeleton design made from aluminum. QD sling mount holes. Folds to both sides....

    63,01 €
    In Stock
  • 35,95 € In Stock

    : 5KU

    5KU36

    5KU PBS-1 Airsoft Suppressor in black. 24 mm CW thread with included 14 mm CCW adapter. Full metal construction for an authentic AK suppressor look. Length 204 mm, diameter 38 mm (base 48 mm). If you want a silencer, no stress — get this PBS.

    35,95 €
    In Stock
  • 16,07 € In Stock

    : 5KU

    5KU37

    AK Rear Sight RIS Mount for Red Dot Sight by 5KU for airsoft rifles of the AK series in black. Lightweight and durable RIS mount designed for optics and red dot sights. Made from CNC-machined aluminum alloy. Easy installation on the rear sight without any weapon modification. Compatible with AEG and GBBR AK models featuring an adjustable rear sight.

    16,07 €
    In Stock
  • 17,76 € In Stock

    : 5KU

    5KU38

    AK Rear Sight Mount for Red Dot by 5KU for AK-series airsoft rifles in black. Lightweight and durable mount designed for red dots with an Aimpoint T1 footprint. Made from CNC-machined aluminum alloy. Simple installation without weapon modification. Compatible with both AEG and GBBR platforms.

    17,76 €
    In Stock
  • 17,76 € In Stock

    : 5KU

    5KU39

    5KU AK Rear Sight Mount for Red Dot Sights in black. Lightweight and durable mount for red dot sights with Optima / Docter / Vortex footprint. Made from CNC-machined aluminum alloy. Easy installation with no modification required. Compatible with AEG and GBBR rifles.

    17,76 €
    In Stock
  • 13,96 € In Stock

    : 5KU

    5KU42

    AEG M4 / AR15 Receiver End Plate with RIS / M1913 Stock Adapter by 5KU in black. Allows installation of stocks with RIS / 1913 (M1913) mounting interface (MCX, MPX, STRIBOG style). Can also be used without a stock for a compact M4 pistol setup. Easy installation on M4 AEG receiver (TM standard). Made from CNC-machined aluminum.

    13,96 €
    In Stock
  • 14,80 € In Stock

    : 5KU

    5KU43

    Folding Receiver End Plate with RIS / M1913 Stock Adapter by 5KU in black. Designed for LCT and CYMA airsoft AK rifles (folding stock versions). Allows installation of stocks with RIS / M1913 mounting interface (MCX, MPX, STRIBOG style). Can also be used without a stock for a compact AK pistol setup. Easy installation. Made from CNC-machined aluminum.

    14,80 €
    In Stock
  • 13,96 € In Stock

    : 5KU

    5KU44

    Folding Receiver End Plate with RIS / M1913 Stock Adapter by 5KU in black. Designed for E&L airsoft AK rifles (folding stock versions). Allows installation of stocks with RIS / M1913 interface (MCX, MPX, STRIBOG style). Can also be used without a stock for a compact AK pistol setup. Easy installation. Made from CNC-machined aluminum.

    13,96 €
    In Stock
  • 22,84 € In Stock

    : 5KU

    5KU45

    5KU DTK PP-19 / SAIGA-9 / AK Airsoft Suppressor in black. Short version – 105 mm in length. Replica of the ZenitCo DTK SW Saiga-9 suppressor, combining a flash hider and compensator design. Designed for PP-19 Vityaz, Bizon, Saiga-9 and other rifles with a 14 mm CCW thread. Made from CNC-machined aluminum. Hollow body with sound-dampening foam...

    22,84 €
    In Stock
  • 54,13 € In Stock

    : 5KU

    5KU47

    SKELETON AR15 Stock Tube for AK by 5KU in black. Designed for AK with folding stock (AK-74M, AK-105, AKS-74U, and others). Stock tube adapter is side-folding. Allows the use of AR15 / M4 type stocks. QD sling swivel sockets.

    54,13 €
    In Stock
  • 71,47 € In Stock

    : 5KU

    5KU24

    CNC Lower Handguard ZB-10M for AK by 5KU in black. Short variant inspired by ZenitCo handguards for classic AK / AKM airsoft rifles. Lightweight CNC-machined aluminum with integrated RIS rails. Length 160 mm, weight 170 g. Not compatible with AK-74U or other compact variants.

    71,47 €
    In Stock
  • 38,06 € In Stock

    : 5KU

    5KU26

    CNC Upper Handguard ZB-19 for AK by 5KU in black. ZenitCo-inspired version for classic AK / AKM airsoft rifles. Lightweight CNC-machined aluminum with top RIS rail. Length 95 mm. Designed for the B-10M / ZB-10M lower handguard.

    38,06 €
    In Stock
  • 13,96 € In Stock

    : 5KU

    5KU17

    Enlarged Charging Handle Extension RP-1 for Airsoft AK Rifles by 5KU in black. Compatible with modern AK builds, inspired by ZenitCo RP-1. CNC-machined aluminum construction. Larger grip surface with anti-slip texture for faster charging and easier handling. Suitable for both AEG and GBB AK rifles (not for real firearms).

    13,96 €
    In Stock
  • 27,49 € In Stock

    : 5KU

    5KU16

    Aluminum Airsoft RIS Vertical Grip PK-0 by 5KU in black. Replica of the ZenitCo grip. CNC-machined aluminum construction. Dual screw mounting system for RIS rails. Built-in storage compartment with screw-on cap. Enhanced ergonomics for faster aiming and a firmer hold, especially on GBB rifles.

    27,49 €
    In Stock
  • 24,95 € In Stock

    : 5KU

    5KU19

    Aluminum Airsoft RIS Vertical Grip PK-1 by 5KU in black. Replica of the ZenitCo grip. CNC-machined aluminum construction. Dual screw mounting system for RIS rails. Built-in storage compartment with screw-on cap. Enhanced ergonomics for faster aiming and a firmer hold, especially on GBB rifles.

    24,95 €
    In Stock
  • 54,98 € In Stock

    : 5KU

    5KU30

    CNC Upper Handguard B-31C for AK by 5KU in black. Variant inspired by ZenitCo for classic AK / AKM airsoft rifles. Lightweight CNC-machined aluminum with a top 20 mm RIS rail. Length of 195 mm. Designed to fit the B-30 lower handguard.

    54,98 €
    In Stock
  • 25,37 € In Stock

    : 5KU

    5KU21

    Airsoft Suppressor DTK-4 with Inner Barrel (POWER-UP) by 5KU in black. Features 24mm CW threading, designed primarily for GHK / E&L AK rifles and others. Increases muzzle velocity by up to 15 m/s (≈0.25 J). Dimensions: 186 × 45 mm. Replica of the ZenitCo DTK-4 suppressor. Made from CNC-machined aluminum. Includes POWER-UP extended inner barrel with...

    25,37 €
    In Stock
  • 86,69 € In Stock

    : 5KU

    5KU28

    CNC Lower Handguard B-30 for AK by 5KU in black. Long variant inspired by ZenitCo for classic AK / AKM airsoft rifles. Lightweight CNC-machined aluminum with integrated RIS rails. Dimensions of 255 × 53 × 38 mm, weight of 260 g. Not compatible with AK-74U or other short-barreled versions.

    86,69 €
    In Stock
  • 27,49 € In Stock

    : 5KU

    5KU15

    Aluminum Airsoft RIS Vertical Grip PK-4 by 5KU in black. Replica of the ZenitCo vertical grip. CNC-machined aluminum construction. Dual screw mounting system for RIS rails. Built-in storage compartment with screw-on cap. Enhanced ergonomics for faster aiming and better control, especially on GBB rifles.

    27,49 €
    In Stock
  • 57,09 € In Stock

    : 5KU

    5KU29

    57,09 €
    In Stock