top of page

Description of Jams

Failure to Fire:

Simply put the trigger is pressed and the gun does not fire.  While this is normally a cartridge malfunction it can sometimes be indicative of an issue with the firearm itself.  This is also known as a light strike.

Failure to Feed:

A failure to feed occurs when, on the slide's/bolt's forward stroke, the cartridge in the magazine does not full enter the chamber and the gun does not go into battery. 


Failure to Extract:

The spent cartridge is not pulled out of the chamber and either remains in the chamber fully or partially leading to what is known as a double feed.

Double Feeding:

The action of the firearm tries to load a new round into the chamber but the spent cartridge remains in the action causing a jam.

Failure to Eject:

The cartridge fails to be thrown clear of the action on the ejection cycle.  This results in what is sometimes known as a stovepipe jam where the spent casing ends up trapped between the breach and rear of the chamber with the majority of the case sticking out of the ejection port. 

bottom of page