FYI. I just watched Ian McCollum's Forgotten Weapons video on Mark 4 Sterlinn. It was on Patreon and will be released soon.

Apparently he hadn't shot one, it was a new SMG for him to shoot. He will be doing a series of videos on it.

Refreshing is he shoots about as accurate as I do-thus my moniker Ready FIRE Aim.

I watched it on a Patreon donation site since I support his channel with a few bucks a month.