Wow. your post is full of fail.
1. In Boot camp, we were trained to field strip the 1911, blind folded, so as to be able to remedy a possible failure, in the dark.
2. If there's room to swing a hammer, theres room to clear a malfunction, but with the bad guy in your face, it's pretty hard to ask the guy you're trying to wack, for a time out, to clear your glock.
3. How can he give his position away, when he's already spotted the bad guy and is trying to eliminate him. They can see each other. It's a tunnel, not a underground subway, with objects to hide behind.
4. If you knew anything about the 1911's history, you'd know that the 1911, was used, with ongoing success, by our Tunnel Rats, to clear NVA and VC tunnels, throughout the 15 year Vietnam conflict. Marine Corps Rats carried a flashlight, a K-Bar and a 1911. My 1911 was handed to tunnel rats, on several occasions, for that purpose and never failed to function. Dust in the air, causing 1911 failures. What are you smoking! You ever even been in combat and carried a 1911 into battle? Life from the cheap seats, is full of poor information, as is your post.