The Comtac III is still being manufactured by Peltor.
You need to get a separate cable to be able to use the microphone with a PTT
They have packages that do come with the mic, but this one does not. Any of the Comtac 3's will accept a mic boom, and it will accept it on either side, depending on your dominant side.
You can hook up PTT with them, yes. They do not come with it though. I have my ham radio hooked into mine with a PTT. I own these and Sordins, and IMO these are far better sound quality. I think most folks would be very pleased with their quality.
Please email us at techsales@opticsplanet.com so we can confirm with 3M what is included.
Yes, will be the gel cups.
Yes, you can add a boom mic and it will mount to either side.