Hi Mike,
I just received my G3 barrel wrench and single screw cocking piece in the mail this afternoon! Thank you for these parts (excellent quality parts if I may say)! One comment on the single screw cock piece - wrench size is 0.050 hex key (use actual hex key where shaft is same size as the end so it can fit all the way down the screw hole). Also, the threaded hole for the screw was not "cleanly threaded" all the way down - meaning that when I was turning the screw down, it ran into resistance and needed to be (some/little) "forced" turned before I could see the set screw to protrude into the main channel (firing pin channel?). I recommend this be performed before installing so that when you turn the set/grub screw to "finger tight" that it is actually contacting the part and not just "binding up" in un-chased threading.
I was searching and found the 3 year old VGW video on setting this and then the back of my brain was screaming "DON'T DO IT...go back and read the SH forum" and lo and behold, found what I read (and stored in my aging brain) your warning and note.
Any update on creating a video on how to do a proper adjustment of the cocking piece (as this will likely need to be done after replacing the OEM (2 screw CP) with the DDG 1-screw CP?
Thanks, Dude.
Yessir, the Allen size is .050 and I use a hardened tool, not the .050 from a Chinese Allen set, which is why the broached feature in the screw gets stripped.
Also, the initial resistance is normal and not indicative of a problem. The set screw has no issue moving through the junction of one threaded feature into a perpendicular threaded feature.
Exactly; do not follow the VGW video, as there’s info pertaining to using a piece of paper as a gauge between surfaces that aren’t relevant to proper adjustment.
Keep in mind that the process isn’t adjusting the firing pin at all, but instead, the position of the cocking piece relative to the sear surface and adjustment validation occurs by monitoring the handoff during bolt closure.
I’ll cover all the details as soon as I can get a video done, which I’ll post here.
MB