The Colt Revolving Rifle was generally respected for its increased firepower but the entire world was not overly enthusiastic about it.
See Pg. 8 "Colt an American Legend" Arbatus Publishers, NY,NY 1990 by R.L.Wilson. Noted British Gun Authority during the period of production of the Colt Rev. Rifle, Jeffery Scoffern, stated "Fire a revolving rifle at night, observe the escape of lateral flame like the halo around the head of a saint. How would you like your arm to be that burning halo of flame? Colt tells you his carbine need not be held with two hands. I tell you they cannot be held with two hands, the coat sleeve would be burned through presently"
I question the comment attributed to Colt. Given the weight and length of the Colt Revolving Rifle, how would you fire it without using two hands?