Unlike industrial full-face respirator masks, the gas mask designation typically signals non-industrial applications. Police applications include tear gas protection/riot control, and military CBRN protection of highest degree. Mostly, these gas masks use the 40mm NATO style threaded connectors. While that can potentially make the masks and canisters from different manufacturers interchangeable, they are only certified to standard with their respective brands. For example, MSA gas masks should be used with proper MSA Canisters.
3M 6000 Series Full Face Respirator with DIN Port - 6700DIN
This full mask 3M respirator comes with a connector that accepts standard threaded canisters.$229.99Each2
3M 7800S Full Mask Respirator
Ultimate Reusable respirator from 3M features a silicone facepiece and is made for use with bayonet style cartridges.$368.55Each3Currently unavailable due to COVID-19 pandemic
3M Gas Mask FR-7800B
This 3M gas mask could be used with CBRN cartridges.$369.90Each3Currently unavailable due to COVID-19 pandemic