Buy it and shoot the crap out of it. If it breaks, send it back and they will fix it. The ONLY reason sI sold my Wilson were it didn't have an ambi safety (which they would have installed as cheaply as anyone locally) and it was a bushingless 4" model. I absolutely despised needing a paperclip to take it apart. I shoot enough to make that a complete PIA. NEXT time I'm either getting a 5" gun or having them build a 4 1/4 custom from a Caspian frame & slide.
When all else fails - read the directions