NINJA REG MOUNTED ON A 90CU CARBON FIBER BOTTLEMADE IN THE USASRT 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 valveAll black tactical lookBrass or optional Aluminum bonnet - see regulator parts for detailsMeets all DOT CGA and ASTM specificationsCompletely rebuildable by the end 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 Type: Tanks Color: As Shown Gender: Unisex