Ontario still makes the service pattern 18 inch blade Collins pattern machete, too. That's the only type I use for heavy brush work at the riverbank. I'm due for a new one. I've been using the same one for over 20 years and the grip rivets have started to come loose. Soon the plastic grips will start to crack. I have some duct tape on the handle now to keep it comfortable in the handMike hit the nail on the head with that match up. I've only heard good things about Ontario Knife Company.
I must confess that I was a squid in the late 80's -early 90's.. but I did end up in a Special Boat Unit in the USN Reserves out of Little Creek VA. Was fun until Clinton money didn't flow like Bush money had .. times got hard and I got out.
speaking of training with that bayonet, that M7 feels like its quite a weapon in the right hands.
I think I had equal respect for the unsheathed bayonet as I would if I would have had a chambered 1911 as far as handling them for the photos.