[jyl]

I used to mull over how you’d make the thinnest, lightest possible 45 with the lowest possible bore. Seems the gun needn’t be any thicker than the barrel. Use a gas system so you don’t need the mass of a slide, direct the extra gas (seems like lots of gas is not propelling the bullet when barrel lengths get short?) to counteract muzzle lift. Use something like the Luger’s toggle system to minimize rearward movement. Polymer is nice but carbon fiber would be stronger and stiffer.