...(Also sometimes called a 'sear bar')...
Warning! Small parts fall out easily!
I've read posts here about cleaning your trigger bar, they usually suggest pushing the plunger in & out in a container of solvent. I had mine out today, and decided to 'clean' it. I put some lacquer thinner in a small can and pushed the plunger in & out repeatedly. To my surprise, the assembly came apart in the can...
The small pin is not secured [pressed] in the body, it is just held in by spring tension on the plunger.
Very tiny pin, about 3/64" in diameter. To get it back together, I used a #56 drill bit to assemble the bar, and then used a magnetized 1/8" rod to push the pin in (and the drill bit out) while holding the plunger in.
Pictures below.
From now on I will be very careful about handling the trigger bar.
