is the filter compatibility

if you have a 40mm NATO gas mask or a soviet 40mm

i think there is a chinese army pipe extension

that allows you to use both

https://youtu.be/gVvW1d4fJ4I

Yeah Soviet 40mm are kind of fucky

Pretty sure they're also called GOST filters though I think I'm wrong there

I'd jump on a 40mm NATO mask over a GP5 but in reality I think both filters are going to be hard to come by if you're scavenging

yes

gost threading or 40mm nato

also

lemme refind you another tip i found online

https://gasmaskandrespirator.fandom.com/wiki/User_blog:JeromeZP/How_to_convert_a_GP-5_to_40_mm_NATO_(works_with_every_40_mm_mask)

it may fuck up your threading

so you'll only be able to use nato

but uh

fuck it

its more common anyway

Yeah

but if you live in eastern europe

bunkers are filled with old GP5 filters

I think this should only be done if you have two GP5s and no NATO standard masks

i mean

just buy a PMK-1

Yeah

gost threading

but 2 entries

That's the best option

so you can use both

oh shit

yeah

one for nato one for regular

i wanted to buy one anyway

I have a lot of learning to do when it comes to specific masks

Were the older GOST filters an asbestos hazard

yep

all soviet filters

fugg

the most common ones you find on GP5's

the big green ones

big hazard