Having the proper firearm and the correct parts will merely get you a replica of the U.N.C.L.E. Special. Thankfully, in the process of scrounging for parts I met someone who not only helped me source the parts, he helped me figure out how to make everything function properly.
Completing of the pistol portion of my U.N.C.L.E. Special brought with it a sense of having reached the half-way point of a long journey—a year-long one—but then again time does fly when you're having fun, especially when both the research and results are so rewarding. But, celebration was premature since there was more work to be done.