Soft rubbers for lower FPS, Hard rubbers for higher FPS, I would probably drop is a softer spring, 400 is unnecessarily hot.
And yes, tight bores are good. Prothemus and systema both make great barrels, but if your on a budget, madbull V2 Black barrels are nice.
Also, i always recommend putting a sorbo pad in your mechbox, regardless of its use
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Quote:
It's better to light a candle, than to curse the darkness
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Chinese proverb
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