OMS Recrational Sidemount Adapter
Finally... a sidemount system that doesn't require you to buy all new dive gear. The OMS Sidemount Adapter allows full sidemount functionality with your existing wing and backplate setup. Standard slots and grommets allows you to fit with a variety of brands. Thus eliminating the need for a dedicated sidemount system.
Also available in a tech version, call for pricing and availability.