Comments by "Hyok Kim" (@hyokkim7726) on "Rise and fall of the MP5 submachine gun" video.

  1. 04:37 What I read was that some SWAT cops got the robbers by having the bullets ricochet beneath the vehicle they had been using for barricade/cover and getting to their legs? It's actually SWAT 101, especially when one wants to put a suppressive fire around corner without even having to slice the pie. Why SpecOps keep enough distance away from the wall when they are traversing along the wall in linear in case get ambushed by the hostile from the opposite side. Btw. IJA had come up with that technique, sometime in 30s during their war in China. 04:48 I think that the powers that be are misguided on this one. The police eventually got them where they were not protected by body armors, IIIA, not necessarily by bullets going through the body armor. Besides, WW2 style 'hot' smg 9mm fired from long enough barrel would have gone through IIIA, if the range was close enough. Or they could have used slug for their shotguns, which would have gone through the body armor as well. It was really more about suboptimal logistical/tactical preparation than failure of 9mm. For LE application, other than special SWAT scenario, smg is still the way to go. Basically, the same kind of hullaballoo, blaming the hardware, for the failure of 'software', as in FBI Miami shoot out, blaming 9mm, and going for .40, instead of suboptimal tactics. 05:25 Pro, 9mm smg is lighter, given everything else equal, less expensive, meaning more money for training, lighter, more compact ammo, more ammo to carry in person, more capability for suppressive fire to pin the hostiles, ammo can be cheaper, , especially for LE for volume discount, simplifying logistics even further. Less muzzle blast/flash, which can be important when firing at night, and/or confined space, especially inside the building. Easier/quicker to clear the malfunction, especially under stress, in real time. Also, better ricochet when one wants to get the hostiles through deflection, than 5.56, which don't deflect as well as 9mm. Con, less range, but for LE, other than VSC, it really doesn't matter. Better penetration against IIIA and below body armor, but then how many hostiles wear III or above body armor? Besides, III won't defeat 7.62 NATO, so are they going to issue M-14 to LEs? Nuts. Sometime in 80s, British came up with user adjustable electronic trigger control for the sear to make MP5 even more controllable in full auto fire, that is, full auto rate itself was adjustable from the theoretical mechanical rate, down, making the gun run cooler, and more accurate in full auto, but without losing the first shot accuracy of closed bolt.
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