VMP 20mm Stock Adapter (4-Slot)

GBB M4-spec rear adapter with a four-slot 20mm RIS rail for fitting RIS-mounted stock solutions.

Product Features:

• Compatible with any GBB M4/AR spec buffer tube receptacle
• Four-slot 20mm RIS rail mounted at the rear of the receiver
• Supports a wide range of RIS-mounted stock systems
• Clean, minimal design with no integrated sling points
• Durable, lightweight construction
• Ideal for custom rifle builds and modern rear-end configurations
• Suitable for VMP platforms and GBB M4-spec replicas

The VMP 20mm Stock Adapter (4-Slot) converts a GBB M4-spec buffer tube receptacle into a rear 20mm RIS mounting surface, giving players access to a wide range of RIS-mounted stock options. With four available rail slots, the adapter accommodates longer or more specialised stock systems while maintaining a stable, secure rear attachment point.

Its clean layout, free from integrated sling points, keeps the assembly minimal and focused on providing a solid foundation for custom stock configurations. Compatible with any GBB M4-spec receiver—including the VMP series—the adapter installs easily and opens the door to alternative silhouettes and personalised ergonomics.

A strong choice for players building modernised rifle platforms or exploring non-traditional stock solutions.

Range Overview:

VORSK accessories are designed to enhance the performance, handling and customisation options of your airsoft replicas. Built with the same attention to detail found across the VORSK range, each component offers reliable fitment, practical functionality and a refined user experience. Whether upgrading ergonomics, expanding capability or replacing worn parts, VORSK accessories provide clean installation, solid durability and compatibility across a wide selection of modern platforms.

• Precision-engineered for reliable fit and function
• Durable construction suitable for field use
• Easy installation with replica-safe interfaces
• Enhances performance, ergonomics or modularity

Brand Statement:

VORSK Airsoft - Effective, Elegant, Mission Ready VORSK Airsoft are Gas-Blow-Back specialists, manufacturing a wide range of products from high-performance replicas to premium consumables. The brand's design ethos moves away from conventional 1:1 replica production, offering genuine alternatives for airsoft players who want to stand out from the crowd. It is not just about appearance - every VORSK product is designed, tested, and manufactured in-house, optimised to perform with VORSK's own GBB Fuel 'Airsoft Gas' and premium BB range. This commitment to in-house development ensures consistent, refined, and reliable performance across the entire product line. From their acclaimed GBB pistol series to the innovative VORSK Modular Platform, featuring the VMP-1 SMG and the VMP-2 multi-role platform, VORSK continue to push boundaries, delivering airsoft solutions that are as effective as they are elegant.