I've been using an Obsidian 45 on both a 45 and 9mm and looking to make it easier thought about a threaded adaptor that would live on the 9mm allowing me to do a quick swap between the 45 and 9 without having to first change the end cap. Did some research and found there's a couple of adaptors on the market for doing something similar. My question is do they/will they work as I intend them to? And has anyone else tried this route...