I just bought a RIA tactical officer’s size model. I didn’t have any problems tearing it down. I do want to swap out the GI style thumb safety with an extended one, but I will be finding a local gun smith to fit that properly.
Apparently the tolerances are so tight, some owners will find they simply cannot remove the guide rod assembly in the normal way. That's certainly the case with mine. The gun might be taking a trip to a smith real soon since I'll be doggone if I'm going to carry around a pocketful of paperclips with me everywhere!