Just launched! Learn slang while watching funny vids: urbandictionary.tv
1. hairpin trigger
Really called a hair trigger. It's a modification made to a gun which makes it respond to very little pressure on the trigger. Allows for faster firing.
If you get a semi-auto chopper, you better put a hairpin trigger on it.
buy hairpin trigger mugs & shirts
hair trigger guns trigger hairpin chopper
by Correy Apr 5, 2007 share this add a video