This Remington manufactured blue finished trigger assembly is for the model 550-1 semi-auto rimfire rifle and is in very good condition with light wear. The trigger assembly consists of the trigger, trigger spring, trigger spring plunger, connector, connector pin, connector spring, and connector plunger. (file photo)

Note: Model 550-1 rimfire rifles with the following date codes and years of manufacture have been observed with this part: (XD) Dec. 57.