Glossary

A semi-automatic firearm is said to be 'out of battery' when the slide does not return all the way forward again after the gun has fired due to a misfeed or a dirty gun.

A double barrel shotgun configuration where the line of sight (top) barrel is located above the bottom barrel

The metal sights on a gun that need to be lined up to shoot. Usually the front sight has to be 'buried' in the back sight to line up the target.

A revolver frame that has no top strap over the cylinder.

This is a very technical term, but a bullet ogive is defined as the 'curve of a bullet's forward section' and can be expressed in terms of a tangent ogive or secant ogive.

Open carry, is a term used to describe visibly carrying a firearm in an unconcealed manner in public places.  It is very important that you understand your state and local laws regarding how you may lawfully carry a visible, unconcealed weapon and where you may carry the weapon.

Shooting while standing and without bracing yourself against anything.

National Rifle Association