While your service is admirable and greatly appreciated, 17 years is a LONGGG time to be out of the loop.
I myself have experience in these fields, I was First Responder qualified to respond to NCBR accidents and disasters, and I know the OM-10 DOES NOT work against chemicals other than CS and OC, it was designed by the Czech to use in riot control. I also know the M17 is NOT to be used in an environment where a chemical or biological agent has an oil base, and the M17 is completely useless in a radiological environment.
If I am also not mistake, the MCU-2/P replaced the Mark V and M17 masks in 1983, (of course as with any item it takes years to filter to every unit) but to me it seems more likely you would have used the MCU-2/P or MCU-2A/P rather than the M17(A1/A2).
Not only that, but I would expect someone who has used and trained with the mask to know how to spell "butyl".
I am sorry, but there are TOO many phony's and fake's on the internet, and someone who is giving FALSE info is not one to be trusted. I know as a FACT the OM-10 is not an NBCR mask, it's merely a riot control agent mask, it wouldn't stop any weapons grade chemical or biological weapon, least of all radiological particles, and the M17 is a design well known for being flawed, and only being designed for Chemical and Biological environment. I can speak with knowledge as of 2009, from both first hand experience and DHS and Joint Service Manuals. In addition ALL personnel (military, FD, PD, SAR, ect... must take ICS classes on terror attacks and natural disasters as of 2004 per HSPD-4). Aside from that when did you use an M15, we don't issue and never have issued M15's, and we have never issued or used OM-10's.
I really am sorry friend, a man's word on the internet isn't worth much, because for all I know you just a surplus store owner, and because people on here have been sharing accurate and up-to-date info we've been hurting your sales of left over, second hand surplus crap.
FYI guys, the only mask you can truly trust is anything modern. M40 and like masks, anything else is flawed, obsolete, or if it's bought surplus was probably flawed or DEMILLED from the beginning, and most foreign made masks purchased as surplus are marked for "Foreign Sales" which are usually the faulty or used masks, we do it when we send gear oversea's.
You guys want readily available info? Either find recently issued manuals or go here
http://www.approvedgasmasks.com/defective-masks.htm