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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.
: 5KU
5KU20
Aluminum Airsoft RIS Grip ZRK-6 by 5KU in black. Replica of the ZenitCo PK-6 grip, complete with markings. CNC-machined aluminum construction. Dual screw mounting system for RIS rails. Enhanced ergonomics for faster aiming and improved grip, especially on GBB rifles.
: 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.
: 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...
: 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....
: 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.
: 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.
: 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.
: 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.
: 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.
: 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.
: 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.
: 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.
: 5KU
5KU48
Quick-detach aluminum suppressor SR16 QD 170 × 38 mm by 5KU in matte black finish for airsoft rifles with 14mm CCW thread offers easy installation and removal without tools. It is a visual accessory for platforms such as M4, MK16, MK18, HK416 and other rifles replicating 5.56 caliber. The package also includes a flash hider and foam sound-dampening insert.
: 5KU
5KU49
Aluminum RIS grip QD ULTRALIGHT 45 by 5KU in black finish is a lightweight front tactical grip designed for mounting on a 22 mm RIS rail. CNC-machined aluminum construction is very strong yet lightweight. Thanks to the integrated QD system, the grip can be mounted quickly and without tools. An ideal accessory for faster target acquisition and more precise...
: 5KU
5KU50
Aluminum RIS grip QD ULTRALIGHT 45 Type B by 5KU in black finish is a longer front tactical grip designed for mounting on a 22 mm RIS rail. CNC-machined aluminum construction is very strong yet lightweight. Thanks to the integrated QD system, the grip can be mounted quickly and without tools. An ideal accessory for faster target acquisition and more...
: 5KU
5KU09
CNC Mount for DOCTER Footprint Red Dot Sights designed for G-Series GBB pistols by 5KU in black. Compatible exclusively with airsoft red dots using the MRDS / DOCTER footprint. Features backup sights with fiber-optic inserts. Mounts directly onto the pistol slide in place of the rear sight. Durable aluminum construction with a low profile for faster...
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5KU07
Airsoft QD Suppressor SOCOM 556 by 5KU in Dark Earth. Comes with a 3-PRONG flash hider featuring a 14 mm CCW thread. Suppressor dimensions of 178 × 38 mm. Replica of the SF SOCOM556 suppressor. Hollow aluminum body with internal foam baffles for partial noise reduction. Compatible with tracer units.
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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.
: 5KU
5KU10
5KU B-33 RIS Aluminum Dust Cover for AK in black. Precision CNC-machined aluminum cover replacing the standard AK dust cover. Integrated 20 mm RIS rail for optics or red dot sights. Compatible with AK AEG rifles (including LCT). Requires lower handguard B-10M 5KU for installation.
: 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.
: 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).
: 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.
: 5KU
5KU12
B-12 Side RIS Mount for AK by 5KU in black finish. CNC-machined aluminum construction for maximum durability. Original ZenitCo Зенит Б-12 markings for an authentic appearance. Allows mounting of optics and accessories on AK-type RIS handguards such as the ZB-10M and similar.
: 5KU
5KU11
5KU B-18 RIS Mount for AKS-74U Rear Sight in black. Compact 80 mm rail for mounting a red dot sight on the rear sight base located on the bolt cover. CNC-machined aluminum – lightweight yet durable (50 g). Replica of the ZenitCo B-18 mount adapted for AKS-74U airsoft rifles.