That is what I concluded from the manual and through use. The Atomic XR/Ranger XR, are basically Concept XRs in a smaller form. What I like about regulated PCPs is I never worry about getting the full fill. I fill to whatever my SCBAs will give. I refill my SCBAs when they reach 3000 psi. Regulated to me means I'm always in the sweet spot, whether I get a full fill or not.Um, so being regulated is what makes the difference between 200, and 250 bar?