I suppose they are out of gas mask?

I have a few M40 masks in stock, small, medium and a few large. Comes with carrier, training filter, clear lens outserts, second skin, pmcs checklist. $170.00

Not sure.but the last gun show I went to in Charlotte nc. had hundreds of them for $5 each

Call to make sure, Also try Delk's army Navy store. On 64 towards Asheboro NC.

I'm sure you could call. I have no idea.