Letter: L

One of several projections located on the underside of the barrel or barrels on break action guns, which serves to secure the barrels to the action or receiver. See Barrel Lug.

(Obsolete) A pressure value determined by means of lead crusher cylinders.

1. Revolvers: A hinged piece attached to the frame which is opened to permit loading. 2. Shoulder Arms: A spring loaded cover for the loading port.

Correct term for shotshells having a low metal head type of construction.

The opening in a receiver where a cartridge may be placed in the firearm either directly into the chamber or the magazine.

See specific type: Bullet, Inside Lubricated Bullet, Outside Lubricated.

A platform or cut placed in the bottom of the receiver that aids in guiding a cartridge into the chamber as the action is closed.

A circumferential groove in a projectile for the purpose of holding lubrication.

1. A general term referring to the total firing mechanism in a firearm. 2. Range command sometimes used to indicate engagement of a manual safety (“Lock your firearms”). 3. An accessory intended to help secure a firearm from unauthorized use.

The amount of energy delivered to the primer from the firing-pin blow.