Review on 620AL BLUE Round Aluminum Barrel for Newborns by Phillip Hoover

First of all, the picture is not representative. Mine came with a gray mechanism and gray rings. never mind But I couldn't get the rings off the thing. I had to clamp it in a vise with protective polymer inserts and unscrew it with a pipe wrench, and even that isn't easy. I've been using newborn caulk guns for many years and this is the first time I've come across it. I wish it came with the black rings they used. Now that I've taken them off I can't put them back on without much resistance and they get stuck again. Absolutely useless for me.