DMK 22C Overview DMK 22C DMK22C Arca - The no-compromises rimfire AR-15. Full metal construction, 10/22 barrel compatible, AR-15 furniture compatible sporting rifle. More info DMK22C - The no-compromises rimfire AR-15. Full metal construction, 10/22 barrel compatible, AR-15 furniture compatible sporting rifle. More info DMK22C LVOA - The officially licensed rimfire reproduction of the iconic War Sport Low Visibility Operations Application rifle. More info January 16, 2020