Tell Me What I Missed

I've been planning on doing a Gun Blogger Glossary for a while now.  I know that when I first started reading the gun blogs there were more than several commonly used terms that threw me for a while.  Discussing possible first handguns with several of my coworkers reminded me of those confusing times.

Check below and let me know if I missed something or if I am way off base on something.  Wouldn't be the first time, won't be the last.