3 MSA Ultra Elite APR/CBRN Respirators

Description

Two large, one small.
One of the large ones is missing the cartridge holder, but note that they are interchangeable, and I also think that you MIGHT be able to screw a cartridge of some type directly into that bottom port?
Same respirator shows some scuffs and wear on and around the faceplate, but I'd say still full visibility.
The other two might better be classed as 'like new' or 'open box' but I'm erring to caution.
Cannot find actual part numbers on the masks.
You are buying all three in one lot, AS IS!
(Please be responsible to judge their suitability for you based on what info I do have and the photos, BEFORE you bid...)
Incidentally I have some NEW cartridges (several types) listed in other auctions, plus some other masks and goggles... so please check my other listings!