I've always thought about a AR platform in 45,,,, but in L C ,,,,now if you could get past the stright wall cases and rimmed base the 45 Long Colt would be the CATS ASS!!!!! And balistacally puts the ACP to shame!! Ya it would be a gun that would only be effective out to 100-125m,, but for a close quarters gun OH BABY!!!! Now something like that would rain down a case of whoop ass!! A couple possibilitys would be a pistol version with a 10-12"bbl so it would be stable enough to be able to print where you want it to,and to control easyly or a carbine version w/16" bbl, you should be able to get some effective ranges and decent accuracy too with something like that.
That 45 Long Colt is a pretty potent round with allot of knock down and historicaly pretty accurate! At least I know it sure knocked down a 180+ lb deer on his ass I got, from 75m with a old ww1 6"bbl Colt revolver. Now put that outa a 16" bbl,,, it should do extreamly well,,, man wouldn't something like that be great for a hog gun!!!! Or for many other large game critters at close ranges for that matter.
What's you guys take on something like that? Myself, having no experiance building an AR platform, but I would think the 45LC cases could be an issue in getting them to run right,,, your thoughts??