The OSS cans have been on sale for $300-500 in the past, but I still wouldn't get one. They are boat anchors! The flow throw design is nice but if you run 100% suppressed then there is no reason you cannot control the gas. Maybe a KAC 11.5 with an adjustable carrier?

I miss shooting an SBR without a suppressor. Hanging an 18oz Trek really changes how an 11.5" handles. So the smallest/lightest muffler to do the job is what I want. A good & cheap option is the Griffin GP5 direct thread.