tldr; Legendary butterfly opening pliers. 14 tools, compact size. Discontinued but cult following. One of Gerber's genuinely good designs.
$57.75 on AmazonScores based on sentiment analysis of topic-related comments
Best praise vs top criticism for Gerber MP400
“The Gerber MP400/600 is a legend of a multitool. It was my first one when I was in Boy Scouts in the 90s and I still have it today. I carried it every day when I worked at a factory and couldn't carry a pocket knife.”
“Painting contractor here. The case and tool are covered with years of that, but I can wipe the tool off. I stopped using the case before the bottom gave out. At one time I thought I was going to replace this with a Gerber 400 Compact Sport but I hate the damned thing because I have to fight to open it. Still have it though. As a matter of fact I just took it out to play with it since it's been awhile. Fought with it again and put it back where it came from.”
108 Reddit opinions analyzed • Last updated 4/4/2026