Hi everyone I've just decided to mod my VSR and after reading a lot of posts here I have found the Cylinder Barrel Ratio one. My country limit is 330 Fps (1J here in Italy), I feel like I can use BBs as light as 0.32g to 0.43g BBs for my rifle in order for me to stay under the limit and not to change my barrel since I don't want to buy another one. So I want to buy a 500 FPS cylinder and spring kit (for 0.2g BBs) and use it with a stock barrel, if compression doesn't correspond I would waste my money with a new barrel or a new kit so, for those who have experience, what FPS cylinder kit should I buy to match the right ratio for a stock barrel?