So I have been hearing about this for along time now, but I now decided to try it out. I heard you could replace the stock trigger spring with a ink-pen spring which makes the trigger more sensitive. I didn't realize how much more sensitive it would really make the pull. I use to be able to get about 3 bps, but now I would say about 5-6bps. If I had a double trigger it would be much faster. I would recommend anyone to try this mod out. The best part though is that it is free!
-Tacman