M4 type retractable stock tube for RIS mount (STRIBOG) 5KU

5KU-320 – Aluminum M4 Stock Extension Tube with RIS / Picatinny Adapter The 5KU-320 aluminum extension tube is designed for mounting an M4 stock onto guns equipped with a 20mm RIS / Picatinny rail. The tube is made of high-quality aluminum with an anodized finish, ensuring high resistance to wear and long durability. The construction allows for length adjustment in 5 positions, providing the user with the option to optimally adapt the stock length according to individual needs or the current situation. The adapter is designed for a secure attachment to a standard 20mm Picatinny / RIS rail where the stock attaches to the replica's body. This allows the installation of an M4-type stock even on guns that are not equipped with a classic buffer tube interface. The tube is compatible with most M4 stocks designed for mounting on a buffer tube. **Technical Specifications:** - Material: Aluminum with anodized finish - Length adjustment: 5 positions - Adapter: mount on 20mm Picatinny / RIS rail - Compatibility: most M4 stocks with buffer tube mount - Color: black - Dimensions: length approx. 18 cm, height 3.6 cm, width 3.5 cm - Weight: approx. 155 g **Main Advantages:** - Allows the installation of an M4-type stock on guns without a standard buffer tube interface - Adjustable length for individual customization - Sturdy and durable metal construction **Assembly Recommendations:** During installation, it is necessary to ensure a secure attachment of the adapter to the RIS / Picatinny rail using the included screws, to avoid unwanted play. Before assembly, we recommend verifying the dimensions and compatibility with the specific replica. The product is suitable for, for example, Delta Armory Stribog models.