Nine bore sizes (.692, .688, .685. .682, .679, .676, .673, .670, .667). Paint-to-barrel match in paintball has always been one of the most important things you can do to increase your guns accuracy and efficiency. The problem is, paint manufacturers are progressively producing paint at smaller sizes and the bores to fit them don’t exist. TechT saw this problem and did something about it with the new iFit Kit.