For some reason my FLGR mates with the frame. I just peered into the ejection port and it looks like the FLGR is flush and supported by the frame. I also just put together my gun with just the slide stop holding the barrel in place. When I slide in the FLGR to see the fitting, the FLGR never comes into contact with the barrel's lower lug, even when I move the barrel around. Are STI's made different or is the GI guide rod supposed to act differently? My STI has a ramped barrel, perhaps that is why it is acting different? It doesn't seem like the guide rod is ever supposed to contact the lower lug. Wanna kill these ads? We can help!