i have had a 100b hvlp in a 1.9 for a primer gun for it has to be 15 years now. great gun. use it every day and i dont think i have ever replaced a part on it. always sprays great, easy to clean. i have 2 of the 1000b's also. these are the exact same gun just not specifically marketed to primer. one is a 1.9 and the other a 3.0mm. i would never buy one of the super expensive sata guns again. that gun is avail in any tip size, hvlp or rp and are fantastic.