In order to bring the three gun lines together into a single platform, it was also necessary to create consistency across the gun amperage ratings. Bernard Q-Gun and S-Gun semi-automatic air-cooled MIG guns have traditionally been rated in multiples of 100, whereas the former Tregaskiss semi-automatic air-cooled MIG guns have traditionally been rated 250, 350, 450, etc. The straight handle guns' overall design and components are the same quality or better under the BTB MIG gun platform; this means that although they are now rated on paper as 300, 400, 500, 600 amp, they will continue to outperform this rating as they always have.