The trigger group is held in the receiver by two pins which makes removal for cleaning and maintenance very easy.

The term 'sear' is sometimes incorrectly used to describe a complete trigger group.

Within a trigger group, any number of sears may exist.

The trigger groups can be swapped out to meet the user's specific mission requirements.

Those full-auto trigger groups go for about a thousand, and can be installed in any 10I22 with no receiver modification.

To make that great length more manageable, the black fiberglass stock broke down at a joint just behind the trigger group.

Ruger designed a new trigger group which corrects this issue.

This pistol was followed by the P-78 in 1978, which features a modular trigger group and a 12-round magazine.

The weapon is based on the Uzi but with the magazine insert in front of the trigger group.

A spring in the trigger group, I think.