A more basic question: is the stock configuration holding you back? A lot of people chase gear rather than skill. Once you start outshooting your gun, then it's time to look to modifications. Otherwise, the "race guns" become a crutch for inferior skills/practice. I've seen plenty of "fast" shooter that miss often enough to knock them back to the middle of the pack, and slower shooters that do just as well because they hit what they shoot at. The TOP guys are fast AND accurate.