Ninja PRO V2 Series Regulators Our PRO V2 series of regulators takes our already very popular and innovative standard regulator and improves upon it even further. Ninja PRO V2 regulators are fully rotational so you can set the gauge and fill nipple in any position you want without digging into your wrist. This regulator like all Ninja regulators also features our ball valve design which gives you 30% increased flow over other regs. The SLP regulator is non adjustable set at 300 psi for the Bob Long G6R and Victory and the MACDEV Clone