The Model 119 was designed to compete for the USAF contract that was eventually won by the JetStar.
After losing out, McDonnell developed it into the Model 220 and aimed it at the biz-jet market. It wasn't successful and only the prototype was built. McDonnell used it as a company hack for a while then retired it.
Over forty years on now, I do believe that the airframe survives and can be seen in the US. Texas seems to ring a bell but if I can get any closer I'll re-post.