5KU M4 AEG RIS / 1913 Rail Stock Base Adapter - Black View larger
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5KU M4 AEG RIS / 1913 Rail Stock Base Adapter - Black

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.

13,95 € tax incl.

Availability: In Stock at store

5 Items  

5KU42

: 5KU

Accessories

  • 71,44 € 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...

    71,44 €
    In Stock
    Add to cart
  • 62,99 € 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....

    62,99 €
    In Stock
    Add to cart
  • 71,44 € 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...

    71,44 €
    In Stock
    Add to cart
  • 71,44 € 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....

    71,44 €
    In Stock
    Add to cart
  • 116,25 € In Stock

    : CTM TAC

    CTM0083-42

    Airsoft RIS TwinFold Stock from CTM TAC in black. Fixed version with a length of 4.2" (106.6 mm). Compatible with RIS rail (M1913). Folds to both sides. Integrated QD mounting point with anti-rotation lock. Made from 6061 / 7075 aviation aluminum with stainless-steel locks for maximum durability.

    116,25 €
    In Stock
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  • 133,16 € In Stock

    : CTM TAC

    CTM0083-ADJ

    Airsoft RIS TwinFold Adjustabe Stock from CTM TAC in black. Adjustable length 190 to 245 mm. Compatible with RIS rail (M1913). Folding to both sides. Integrated QD mounting point with anti-rotation lock. Made from 6061 / 7075 aircraft-grade aluminum with stainless-steel locking parts for maximum durability.

    133,16 €
    In Stock
    Add to cart

5KU M4 Receiver End Plate with RIS Adapter

Looking for a simple way to equip your AEG M4 with a stock that mounts via a RIS / 1913 rail? Need a mount compatible with TM-standard M4 receivers? Want to switch to a compact configuration without a stock in seconds? The AEG M4 receiver end plate with RIS adapter from 5KU is just what you need. This CNC-machined aluminum adapter allows quick and secure attachment of M1913 / RIS-mounted stocks while keeping the option to run your rifle stockless for maximum compactness. Thanks to its solid aluminum build, the adapter provides excellent rigidity for AEG AR15 platforms and minimizes wobble even under heavy use. Installation is straightforward — simply replace the original buffer tube interface to gain a modern RIS mounting surface compatible with MCX, MPX, STRIBOG, and similar stock types.

The stock shown is for illustration only (sold separately)

Key Features

  • RIS / 1913 Compatibility:
    Allows installation of stocks and accessories using RIS mounting for versatile configurations.

  • Dual-Use Design:
    Use your rifle with or without a stock (pistol-style setup) for improved maneuverability.

  • CNC Aluminum Build:
    Lightweight yet strong construction with precise fit and minimal play.

  • Easy Installation:
    Direct fit for TM-standard M4/AR15 receivers, no major modifications required.

  • Low Weight:
    Compact structure maintains balance without adding extra bulk.

Technical Specifications

  • Material: CNC-machined aluminum
  • Weight: 50 g
  • Color: Black
  • Compatibility: AEG M4 / AR15 (TM standard)
  • Mounting Interface: RIS / 1913 (M1913) stock adapter

Package Includes

  • AEG M4 receiver end plate with RIS / M1913 adapter
ColorBlack
Body/receiver materialMetal