For those asking about gas masks
New headgear setup I've been trying for a little while. I see a lot of posts here asking about gas masks, which ones are safe to use etc so thought I'd make this post.
This is my JSP Force 10 mask, the lense is fully rated to EN166: B which is safe for airsoft use. It fits great with my lid and really gives that nice, full seal feel.
Only downsides are that it gets hot and sweaty quite quickly, and with the filters in it is a little harder to breathe but as long as your cardiovascular health is good you should be fine.
I find with the filters attached so that the exhale valve works properly, it is veeery hard to get the mask to fog up, so in this regard it works better than my regular setup of mesh mask and goggles.
Hope someone finds this helpful! Cheers!