Data sheet
Description
5KU-407-BK
BRAND 5KU
1913 Rail Stock Adapter designed for VFC / Umarex MP5 GBB platforms, CNC machined from aluminum to ensure durability, precision, and reliability on gas blowback systems.
This adapter allows the installation of stocks compatible with the M1913 (20mm Picatinny) standard, making it ideal for modern and fully customizable builds.
Compatible with JMAC style folding systems, it enables a compact and modular tactical setup.
Key Features
- CNC aluminum construction
- M1913 20mm Picatinny rail
- Compatible with JMAC style folding systems
- Solid and durable structure
- Optimized for GBB platforms
Compatibility
- VFC MP5 GBB
- Umarex MP5 GBB
- MP5 Gas Blowback replicas with similar specifications

