HPA Adapter MK23 Series to Shotshell (Green)

A compact HPA adapter that converts compatible MK23 Series gas magazines to use an external HPA system with 30-round Airsoft shotgun shells.

Product Features:

• Compatible with clone MK23, SSX23 and SSX303 platforms.
• TM feed lips may be required when using with TM MK23 platforms.
• Feeds from compatible 30-round Airsoft shotgun shells.
• Compatible with most Airsoft shotgun shells.
• Recommended for use with CYMA and Golden Eagle shotgun shells.
• Fully replicated MK23 magazine profile.
• High internal air volume.
• Plug and play design with valve, feed lips and gas router pre-installed.
• No donor parts or assembly required.
• CNC aluminium magazine baseplate.
• Supplied with a US Foster HPA quick disconnect fitting.
• Three interchangeable feed tubes included for feed optimisation.
• Ambidextrous rear shell release.
• Integrated BB retention system feeds all 30 rounds with no BB loss during shell changes.
• Two integrated grub screws allow adjustment of the nozzle-to-gas router seal.
• Recommended operating pressure: 90-150 PSI.
• Maximum operating pressure: 150 PSI.

The AIRTAC MK23 Series to Shotshell HPA Adapter is designed to convert compatible MK23 Series gas magazines to operate from an external High Pressure Air system while feeding from compact 30-round Airsoft shotgun shells. Replicating the profile of a standard MK23 magazine, the adapter provides a compact and ergonomic alternative to larger magazine conversions while maintaining high internal air volume for reliable HPA performance.

Supplied fully assembled, the adapter includes the valve, feed lips and gas router already installed, eliminating the need to transfer components from an existing gas magazine. The CNC aluminium baseplate provides a durable foundation, while the ambidextrous rear shell catch allows fast and intuitive shell changes during gameplay.

To maximise compatibility, the adapter incorporates two integrated grub screws that allow the distance between the adapter and nozzle to be adjusted, helping optimise the air seal and improve FPS consistency. Three interchangeable feed tubes are also included to compensate for manufacturing tolerances between different Airsoft shotgun shell brands, ensuring reliable feeding across compatible shells.

The integrated BB retention system feeds all 30 rounds from each shell without dropping BBs when the shell is empty. Supplied with a standard US Foster HPA fitting, the adapter is designed for regulated HPA systems operating between 90 and 150 PSI, with a maximum operating pressure of 150 PSI.

Range Overview:

AirTac’s HPA Adapters range converts traditional gas-powered replicas to use high-pressure air magazine systems with seamless reliability. Designed for multiple replica platforms, each adapter features precision-moulded construction, a secure BB-retention system, and standardised US-thread fittings for broad compatibility. The range combines rugged strength with practical installation, giving players smoother reloads and extended playtime through improved air efficiency and modular flexibility.

• Injection-moulded polymer housings provide durability and consistent alignment
• Standard US-thread fittings ensure cross-system HPA compatibility
• Integrated BB-retention systems prevent feed loss during reloads
• Supplied with magwell inserts, screws and shim sets for precise fitment
• Available for multiple pistol and SMG platforms for modular loadouts
• Engineered for reliability, consistency and long-term performance

Brand Statement:

AirTac specialise in developing high-performance HPA conversion systems for airsoft enthusiasts seeking consistent, efficient, and adaptable performance. Their focus on precision engineering and robust construction ensures every product delivers dependable field use, intuitive function, and lasting value.

Safety Information:

Do not exceed 150 PSI when operating any airsoft HPA adapter Always use air regulated by a secondary regulator Check PSI output before connecting air to the adapter Do not connect directly to unregulated air sources, CO2 systems, or high-pressure tanks Do not use with incompatible high-pressure air lines or fittings Always ensure correct setup and operation before use