I'm not sure how many people on here are still too interested in this kind of thing but I'm gonna throw this out here anyway in case someone finds it useful. A number of months ago I picked up a used MSA Ultra Elite firefighting respirator on Ebay. I paid about $45 and it happened to come with all the mounting brackets for the HUD and voice amp, which usually run about $40 more. It also came with the Clearcommand mic for the voice amp, which can run quite a bit more. Quite a steal if you ask me. To make things even better I managed to get a Clearcommand voice amp in working condition for $25. I did have to purchase the 40mm adapter for about $7 and was originally planning on using it with a PAPR, but the PAPR was a little excessive to be practical so I ditched it and stuck the filter directly on the mask. It works pretty well like this once the straps are tightened properly, otherwise it gets heavy and sags. I actually didn't like it at first. It is kind of bulky, but that's because of the big lens. Field of view is excellent. The valves are also a bit loud but that's because it's designed to work with an SCBA, which is great for when I want to run a PAPR. The voicemitter also sucked and was really muffled. I think that was because of the built-in mic, the standard voicemitter is probably a bit better but it's really a moot point because I have the voice amp. The voice amp is really a nice addition, it's loud and clear and very simple to operate. Takes 2 AAAs and is a push on/off, no extra features to get in the way. The head harness is a 5-point but the straps are thick and durable. The head net really helps distribute the load and keeps things comfortable. In total I think I put about $75 into this setup, still well below the average market value of even the M40. So far it has become my favorite mask in my collection. Note: I forgot to mention it here and I have been asked before, the wide lens does affect gun sights somewhat but it's not as bad as you'd think. The mask tapers somewhat which actually works really well with a rifle, the cheek weld is about the same as my M40.