 Because only a small number of the Ring Lever rifles were manufactured, they are considered rare finds among all Colt firearms, with the First Model being the rarest firearm produced under the Patent Arms Manufacturing Company.Although neither the First nor Second Model Ring Lever rifles saw widespread adoption by any military organization, several were procured by the United States Army and the Texas Navy.After an unfavorable review by Army officials in September 1837, which reported that Colt's First Model Ring Lever rifle was prone to failure and too complicated for combat service, a second review was conducted in March 1838.