In this case, it is a "How NOT to" tip.
This guy failed to return the hammer to the un-cocked position after removing the slide. He used a punch with great difficulty to get the MSH pin out. Now,........where did that pin go?
Warning: some blood and while a serious injury, it's a bit funny too.
If you read the whole thread you will see some funny comments.
http://forums.1911forum.com/showthread.php?t=323502" onclick="window.open(this.href);return false;