I think I figured out how "John Smith" was able to fire almost infinite amounts of ammo from his 1911's in "Last Man Standing....
"John Smith" is the alias of a renegade Time Lord who more commonly goes by the name of Doctor Who, Time Lords hail from the planet of Galifrey, and have mastered the art of both space *AND* time travel, the vehicle they use is called a TARDIS, which is an acronym for Time And Relative Dimensions In Space, The Doctor's Tardis, an old Type 41 with a damaged Chameleon Circuit, is stuck in the form of a blue British Police Box, from the outside, it looks to be about the size of a phone booth, but inside, it's *MASSIVE*, housing multiple floors, a library, a swimming pool, a wardrobe, etc...
The way the TARDIS works is quite simple, the exterior of the TARDIS (the part that appears to be a Police Box) is in our dimension, our reality, the *interior* of the TARDIS is in another dimension entirely, plainly put, "it's bigger on the inside"
(Time Lords also use this dimension-folding technology in the production of their garments, their pockets are also "bigger on the inside")
So, basically, to sum up, the "John Smith" in the linked video clips is one of the regenerations of The Doctor, and is using 1911 magazines he had manufactured especially for him on Galifrey, these mags use TARDIS-based dimension-folding technology allowing near infinite capacity, because the interior of the mags are in a completely different dimension, plainly put, Smith's 1911 mags are "bigger on the inside"...
Now, if we could only open trading agreements with Galifrey and have them produce our 1911 mags....
