Yes the ones Joe sells are suitable for regulating from a 6000 psi nitrogen bottle as well. Very high quality! But like $450. However You don't really need a regulator for bench shooting. I just use a long (80 inch) hose and leave it connected to the gun while shooting. Just top off the gun when the pressure on the gauge shows that its time. You will figure that out with use. I have Joe's Tiger Shark tank with optional second gauge that shows line pressure and I just watch that gauge then crack the valve when it gets down to 2,200 psi right from my seat. And if your gun is regulated then it will make no real difference over having an external reg. Works great and saves you a lot of money!.