Comments by "calvingreene90" (@calvingreene90) on "SIG MKPS: Possibly the Most Beautiful SMG Ever Made" video.

  1. It is a shame 9x25 Mouser didn't make it big as a high power pistol cartridge. Maybe if somebody had made a quality, inexpensive, light submachine gun using it. Before the Army dreamed up with the idea of the .30 carbine self defense gun.
    1