Don’t fucking buy Mira products; they’re overpriced Czech surplus. The OM-90 is the Czech designation for Mira’s CM-7M, and you can get them for $90 on eBay, vs. the $450 or so that Mira charges.
Honestly, get yourself an M-40 that’s in good shape, buy a 40mm-to-3M-bayonet adapter, use some 3M P-100 cartridges (you can get them for about $2/ea. when you buy in bulk). P-100 will filter out all particulates–even finer particulates than a HEPA filter or N-95–and will also filter out water- and oil-based aerosols. That covers all riot-control agents, because CN, CS, and OC are all aerosols, and not true gasses. Almost any surplus gas mask that’s been made in the last ~30 years, seals, and uses a 40mm NATO cartridge is going to be just fine for riot-control agents.
If you are really worried about a P-100 filter being insufficient, get a few new old-stock NBC filters. NBC (nuclear, biological, chemical) filters were phased out about 15-20 years ago in favor of CBRN (chemical, biological, radiological, nuclear) filters, but if they haven’t been used, they’ll be absolutely okay for riot agents.
If you wear glasses–and many people do–get a spectacle insert for whatever mask you have. Glasses break the seal, and while you will probably be fine with contacts in, that’s not necessarily a good risk to take. Supposedly the Kris Optical Mag-1 glasses can be worn under a mask without compromising the seal, but I can’t personally attest to that. I think that they’re one of the older styles of BCGs that were issued, but I’m not sure.
Oh, and get GOOD hearing protection. Consider high-end electronic ear muffs, and wearing ear plugs under them. Some places are using LRADs to disperse crowds, and those can wreck your hearing.
Don’t fucking buy Mira products; they’re overpriced Czech surplus. The OM-90 is the Czech designation for Mira’s CM-7M, and you can get them for $90 on eBay, vs. the $450 or so that Mira charges.
Honestly, get yourself an M-40 that’s in good shape, buy a 40mm-to-3M-bayonet adapter, use some 3M P-100 cartridges (you can get them for about $2/ea. when you buy in bulk). P-100 will filter out all particulates–even finer particulates than a HEPA filter or N-95–and will also filter out water- and oil-based aerosols. That covers all riot-control agents, because CN, CS, and OC are all aerosols, and not true gasses. Almost any surplus gas mask that’s been made in the last ~30 years, seals, and uses a 40mm NATO cartridge is going to be just fine for riot-control agents.
If you are really worried about a P-100 filter being insufficient, get a few new old-stock NBC filters. NBC (nuclear, biological, chemical) filters were phased out about 15-20 years ago in favor of CBRN (chemical, biological, radiological, nuclear) filters, but if they haven’t been used, they’ll be absolutely okay for riot agents.
If you wear glasses–and many people do–get a spectacle insert for whatever mask you have. Glasses break the seal, and while you will probably be fine with contacts in, that’s not necessarily a good risk to take. Supposedly the Kris Optical Mag-1 glasses can be worn under a mask without compromising the seal, but I can’t personally attest to that. I think that they’re one of the older styles of BCGs that were issued, but I’m not sure.
Oh, and get GOOD hearing protection. Consider high-end electronic ear muffs, and wearing ear plugs under them. Some places are using LRADs to disperse crowds, and those can wreck your hearing.