I've had one of these in one of my 1911s for years. It's a cheap way to greatly improve accuracy in an otherwise stock gun. Second the comment about keeping the guide rod screwed down TIGHT - it will work loose otherwise. However, you don't really have to take it apart to disassemble the gun. I never do. Does make getting the barrel out of the slide a bit trickier but not really a problem once you do it a few times.
md2lgyk