I Want to start out by thanking Frank / Vanguard for a great product and excellent support.
Just had the 2013 bolt upgrade, full gun rebuild/tech and new asa installed. I purchased this gun second hand and it was obvious the person who had the marker before me had no idea what they were doing. The turn around time on repair was great and the gun shoots ropes. I purchased the leather case as well ( very nice ) definitely worth the extra cash if your getting the upgrade done. Frank took the time to show me how the gun operates and put to rest some of the negative rumors that are running around. If you have any doubt... throw it out the window and get this mod done!