Hey guys. I'm brand new to customization and I don't know what to look for in internal or external parts to boost the rifles performance. I thought talking to people experienced in this, you guys, would be my best bet. I'm looking to upgrade my spring-action AGM VSR-10 with new internals so that I could shoot .30 gram bb's without having to sacrifice velocity. From what I read in the reviews it can shoot a .20 at around 400-450. I'd like to upgrade it where it can fire .30's at the same velocity or more. What should I look for in parts to meet these conditions??? Ps. If there are any airsoft techs who live in the DFW area, I'd really like some help from y'all especially.