Most regged pumps sweetspot at 300-350ish psi if memory serves (going by the CCM's I've owned) so you can use a low pressure tank for those. I've had no trouble running my T2 on a 400 psi Ninja. Nelson designs usually require high pressure air.
This line is in remembrance of Jared Wilson, friend and paintball teammate who died on 7/27/2005.
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