While I'm sure the better quality was a factor, I'm not convinced that bore and length aren't factors too. Between myself and teammates playing around with our guns, swapping barrels, sometimes something simple like a shorter barrel or longer from the same brand, same bore, has made minor fps differences. (and unscientifically proven accuracy changes) Again my point was simply to dissuade slages from going too crazy and causing himself unnecessary headaches or spending money needlessly. It sounds like He's new to airsoft , or at least to airsoft tech work, and very gung-ho. I think He's better off with small tweaks until He's sure about what he wants from his gun and how to get it.
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