Oh, right, one of the reasons for the later Model B having adjustable sights is because the Model A used the regular sights for the original military SMG, which were not sighted in for the longer 16" civilian market barrel, thus giving you a pretty tall point of impact. The easiest fix for this is to install the original military length barrel, ergo registering it as an SBR (or back when you could still do that, as an MG). The Secret Service suitcase guns actually had a slightly shorter barrel than the original military configuration ones, to make sure they would fit the intended suitcases.
I guess whether or not it's appropriate to bring your Uzi case depends on just _what kind_ of meeting you're scheduling, it could be vital that you don't accidentally bring with you a case of papers and documents instead.
Ah yes, the photos of Secret Service Agent Robert Wanko. Very dramatic and iconic. I think if I ever had the means and options, I'd love to have one of each of the various classic Uzis, the pistols, the carbines, and god willing the proper SMGs. I'd even like the Chinese knockoff, lol.
Bolt has that vertical cut seen here too at the extraction hole. It’s semi. SMG bolt is solid. Also slide stays not open like smg open bolt design. More accurate naturally for most shooter’s. When in bench no difference