I have an S&W 686 (.357 mag) with a 2.5" inch barrel. I contacted S&W and got a quote for a 6" barrel of $145.37 for the barrel and approx. $90 for labor. This is a pretty good deal, however I am a little hesitant shipping the gun to S&W myself out of NJ not being familiar with NJ law regarding this specific topic. Has anyone done this? Should I have my FFL ship it just to be safe? Any help would be greatly appreciated.