Glock Factory 4.5lb Minus Connector

Glock Factory Minus Connector - 4.5 lb.
The 4.5 lb connector is marked with a (-)" located at the top of the piece. Most GLOCK pistols are fitted at the factory with 5.5 lb Trigger Pull. This "minus" connector is a Glock factory part designed to reduce trigger pull to 4.5lbs.