Ninja Ultra Light Paintball Reg Regulator - 4500 psiNINJA regulators can toggle from STANDARD 800-900 PSI output to a medium 650 PSI or low 450-550 PSI output in a few minutes by removing shims. This eliminates the need to purchase 2 regulators or separate spring kits.FeaturesMADE IN THE USA!All black tactical lookNinja Aluminum valve cap includedSRT piston ?Sonic Recharge Technology piston-plated aluminum piston that produces an industry leading recharge rate and virtually eliminates reg shoot downSPA ? Shim Pressure Adjustment- change output pressure by adding or removing shims, not springs or pistonsMFV ? Mini Fill Valve ? Non wrist digging, low profile design fill valveMeets all DOT, CGA and ASTM specificationsCompletely rebuildable by the userEvery regulator is hand crafted and factory testedSuper low response curve 0-50 psi from full to emptySafetyASTM COMPLIANT bonnet threadASTM COMPLIANT DOT burst discASTM COMPLIANT Low pressure burst diskASTM COMPLIANT Restrictor, bleed hole and safety grooveMini Fill Valve is hardened, plated 5000 psi ratedRegulator installed to ASTM specifications