Inhaled gas mitigation

S

Stressor

New member
I've grown tired of inhaling gas and everything in it so I'm taking a multi-faceted approach to increase my training effectiveness and shooting pleasure.

My research led me to this study which shows the biggest component as a particulate is copper. https://www.nature.com/articles/s41598-022-24856-5#Sec11

I've ordered a Chinese knockoff of the Ops-Core SOTR from Amazon.
https://shop.gentexcorp.com/ops-core-sotr-and-sotr-lite/

Then it's just a matter of finding the appropriate 3M filter.

For the gun itself, the can isn't a flowthrough design but the manufacturer does offer a ported endcap which is reported to make a difference so I'm ordering that.

Then the BCG will get replaced with the new KAK downventing model which greatly reduces gas to the face and as a bonus diminishes port pop and noise.

https://kakindustry.com/k-spec-enhanced-ar15-bcg-5-56-300-blackout-dual-ejector-down-vent-sand-cuts-np3-chrome-lined-c158/

I'll update this thread as I start using these things.
 
Interesting article--I wonder if muzzle devices have an impact on gas distribution and inhalation (I would think it would). Problem I've had when having something over the face in cold weather is fogging up eye protection.
 
I'd assume brakes and compensators contribute more than flash hiders. This mask seals over the nose and mouth so it shouldn't fog anything.
 
Gotta breathe sometime. I would think a fan would be helpful, esp. if you continue to hold your breath for a few seconds longer after breaking the trigger. Yes, I'm told by many I have an eye for the obvious.
 
Perhaps consider converting AR to piston? Bleed-off type adjustable gas block may help too.

-TL

Sent from my SM-N960U using Tapatalk
 
3M respirator with P100 is what I use.

The 3M soft masks are good, but the one with the "cool flow" eliminates fogging that can happen with the fully sealed non flow valve version.
 
Also, you don't fear the largest particulate, you fear the smallest. PM2.5 is the max size but includes everything lower. It's exponential for respiratory damage.
 
That's part of my frustration with this. The only information on the gentex site for the sotr is Offers at least 99.97% filtration efficiency against airborne particulates
including lead, asbestos, fentanyl, lubricant mist, and explosive
gunfire residue."

Which doesn't really mean anything.
 
I would think you would need something that filters gasses not just particles.


I have a 3m respirator mask that i really like. I use mine with a particulate filter for sanding, usually wood and drywall. And I use gas filters for painting and spray painting. I also found an adapter that lets me use a particulate filter on top of the gas filter.

Respirator, 3M 7503 half face
https://www.amazon.com/gp/product/B008MCUULW/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1

Particulate filter, 3m 2091 P100. It filters 99.8% of particles at 0.3 microns. Compared to a N95 whish is 95% of also at about 0.3 microns.
https://www.amazon.com/gp/product/B002KFFY9A/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Painting filter 3M Performance Organic Vapor Replacement Cartridges, 1 Pair, Use With Any 3M Bayonet Mount Respirator, For Vapors From Certain Paint Spraying, Adhesives, Sealants, Solvents & Pesticides (6001P1-DC)
 https://www.amazon.com/gp/product/B000XBKLLE/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Adapter to put a particulate filter on top of the vapor filter.
https://www.amazon.com/dp/B005V690NG?ref=ppx_yo2ov_dt_b_fed_asin_title

There are also a lot of full face masks options from 3M using the same cartridge system as well as lots of other filter types depending on your specific need. Shop around some of these listings have had significant price increases since I bought them last.

One other thought. There are lots of systems to mitigate gas. But don't forget to run the heaviest buffer the bolt will lock open on. Primary weapons systems makes a H4 buffer at 6.8oz if an H3 is not heavy enough. the longer you can delay the bolt opening, the more pressure will drop, and the less gas will come back into the gun.
 
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May be a flow through type suppressor? The conventional baffle type is not very good for auto loaders. Like an inflated balloon, the baffles traps the gas and maintains the back pressure well after the bullet exits the muzzle.

-TL

Sent from my SM-N960U using Tapatalk
 
It just arrived this afternoon. I assume it will let more decibels happen but if the gas is decreased it's a good trade.
 
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