A regulator will do a lot for your performance, especially if you find yourself throwing a lot of paint in games.

I'm still not convinced that replacing the stock internals does anything to make the A-5 shoot better. All official testing I've seen done seems to show that aftermarket internals can actually reduce performance. I would only consider replacing the stock power tube if I bought an RVA (to get rid of the forward velocity screw and simplify dissassembly).

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