Yea we have all seen it https://www.glockforum.com/forum/f8/arsenal-double-barrel-pistol-2521/ https://www.glockforum.com/forum/f25/double-firepower-1911-a-2388/
I saw this a while back. Somebody laid his 1911 on a mirror and said, "What a minute! What if we could...." You'll notice the guy in the video has to wear gloves to help manage the recoil. Why stop at .45? Just go with a double-barreled .50 AE. No what you need is a shotgun that shoots grenade rounds, cut off and reduced for carry.