We’ve replicated a Glock magazine and adapted it to take 30-round shotgun shells. A BB latch to prevent dropped BBs and simple push mag release on the rear of the adapter makes it an absolute dream to change shells (release is compatible with Action Army AAP mag-well)
The adapter comes with a 15cm airline, which can be cut down to your preferred size, and a beautiful Foster 22 (US-Style) connector fitted. To finish your adapter, transfer your feed lips and outlet valve from your Glock gas magazine. All adapters are pressure-tested before shipping