Arriving next week
Quick-Detach Carrier
The Q-DC is mechanical quick detach shotgun shell carrier made up of two assemblies. The Receiver Adapter mounts to the shotgun’s receiver and holds the Detachable Carrier. Each carrier uses stainless steel retention springs to consistently and reliably hold shotgun shells brass up or brass down. The carriers can be left loaded without worry or degradation of retention.
https://sjhardware.com/product/aridus-universal-quick-detach-carrier/