Armed Polite Society
Main Forums => The Roundtable => Topic started by: AmbulanceDriver on February 24, 2017, 09:56:12 AM
-
So I've got a couple =D AR's that, like other AR's have horrid stock triggers. Gritty as hell. Culprit is the tool marks on the face of the trigger and on the sear hooks on the hammer.
So I decided to try my hand at cleaning up those tool marks, see if I can improve the trigger a little bit at least.
Picked up some high grit wet/dry sandpaper and backed it with some flat aluminum stock to give me a nice flat working surface.
Started at 600 grit, worked the trigger face and the hammer sear hooks until I just couldn't see the tooling marks any more. Since I didn't have a jig to ensure the angles stayed perfectly aligned, I took it nice and easy and took my time to keep the angles aligned as best as I could.
Then went to 1000 grit to polish out the 600 grit marks.
And then went to 1500 grit to polish out the 1000 grit marks.
Ended up with a surprisingly mirrored finish on the trigger face and top, an almost knife like edge on the face/top edge, and while it didn't improve the trigger pull weight, *MAN* did it smooth out those trigger pulls.
I also know that the hardening on those parts is just a little bit below the surface, so it's really important to only work this until you remove the tooling marks. It takes a little bit of time, but it is well worth it if you don't want to drop a couple hundred bucks on an aftermarket Timney or similar trigger.
-
I thought when I opened this I would read about cutting the hammer spring again. Glad to see its just a polish.
Even my 2 stage RRA match trigger benefited from similar polishing. In fact, very few of my guns have escaped the procedure.
-
this works really well too:
http://junkyardgenius.com/firearms/ar-15/ar08.html
Chris
-
Kingcreek, I tried the cut hammer spring. Once. had about a 50% failure to fire rate.
Next upgrade for these rifles is going to be a set of JP springs, yellow trigger / red hammer