The Glock 25 cent trigger job.... really??

I had to look up "Glock 25 cent rigger job" - and- I guess you get what you pay for! While deuburring and smoothing anything to reduce its surface roughness (Ra) will help somewhat, there are some other ways to reduce friction, and evern more importantly in this case sticktion. assuming that you do not want to use an oil or silicone lubricant and have it pick up grit in this area, a TFL dry lubricant can be sprayed on the connector and frame any parts it rubs againt. That costs 40x 25 cents a can but you get enough for about 100 guns. The other thing that can be done is cleaning small steel parts down with acetone and then bringing them to a near boil (195F) in nickel acetate solutiuon to "electroless" plate the parts with nickel.After about 20 minutes, you have a plated surface a few millionths of an inch thick that is created from thin molecular layers of nickel that lay flat against each other (similar to the molecular structure of graphite, but to a lesser degree. It 's a a slightly matte surface but a little bit of polishing of that surface will give you mirror finish parts that glide over each other very smoothly. It also plates very evenly, you don't have to worry about changing parts geometries.An electroless nickel "kit" can be purchased from suppliers like Caswell plating- not cheap but then again, you have practically a lifetime supply. I am using stuff I bought about 15 years ago, still works.

"25 cent trigger job" sounds sexier than "toothpaste on a Q-tip polish" but it'll only get you so far.