5KU SS-8R RIS (1913) Folding Stock - Black View larger
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5KU SS-8R RIS (1913) Folding Stock - Black

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.

Reinforced steel mounting base.

Another product variants

  • Black
    On stock
  • Black
    On stock
  • Black
    On stock

62,99 € tax incl.

Availability: In Stock at store

3 Items  

5KU33

: 5KU

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    : SIG AIR

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    SIG AIR MPX ProForce – a new level of airsoft! The dimensions and weight of the weapon are 1:1 with the real counterpart, and with precise CNC body processing, M-LOK handguard, and realistic controls, it offers the most authentic experience. Internal technology with VFC Avalon V2 gearbox with MOSFET ensures excellent performance. Its compact size...

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    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.

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    : 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.

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    : Lambda Defence

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    RIS / M1913 Stock Adapter for TM SAIGA-12K GBB by Raptor TWI in collaboration with Lambda Defence. Compatible with MCX-style stocks and other RIS / M1913 interface stocks. Durable aluminum construction with hard anodized finish. Mounts onto the original hinge pin of the folding stock. Designed for TM SAIGA-12K and SAIGA 12 SBS GBB.

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    : Delta Armory

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    Grand Power STRIBOG SP10A3 Alpha Upgrade by Delta Armory. Alpha variant with CNC upper and M-LOK handguard. Tan lower and black upper with official markings. Full upgrade configuration with CNC reinforced internals. Eagle ETU unit ready for 11.1V batteries. V2 QSC gearbox (TM standard). Rotary M4 / M16 hop-up chamber.

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5KU SS-8R Folding Stock

Looking for a lightweight and sturdy folding stock that fits directly on a RIS (1913) stock interface and can fold to either side for easy storage or handling? Need a QD sling mount for quick attachment? Want a stock that’s compatible with popular platforms like the MCX or STRIBOG? The SS-8R brings functionality and durability in a compact and lightweight form. Its CNC-machined aluminum skeleton body ensures strength with minimal weight, while the steel mounting base guarantees a solid lock on any 1913 rail. The ambidextrous folding system works for both left- and right-handed users, and the built-in QD socket provides a secure sling attachment point. Easy to install and remove, the SS-8R is also compatible with 5KU RIS adapters for M4, MP5, or AK, giving you the flexibility to build a truly unique custom airsoft rifle.

Key Features

  • Skeleton design:
    Lightweight frame with cutouts for optimal strength and minimal weight.

  • Ambidextrous folding:
    Can fold to either side for easy transport and flexible use.

  • Reinforced mounting:
    Steel base ensures secure and precise attachment to the 1913 RIS rail.

  • Durable materials:
    Aluminum body and steel base — strength without extra weight.

  • QD mount:
    Integrated QD socket for tactical sling attachment.

  • Compatibility:
    Fits directly on 1913 stock mounts (SIG MCX, GP STRIBOG) or via 5KU RIS adapter for M4, MP5, AK, and other platforms.

Technical Specifications

  • Mount type: RIS rail (1913)
  • Length: 205 mm
  • Width: 108 mm
  • Height: 15 mm
  • Weight: 260 g
  • Body material: Aluminum
  • Base material: Steel
  • Function: Dual-side folding
  • Color: Black

Package Includes

  • 5KU SS-8R Folding Stock
ColorBlack
Body/receiver materialMetal