Hi
I am replacing the trigger, sear and hammer in my Mkiii with a Volquartsen kit. When I was disassembling the parts I thought I was being careful, but I could find the detent ball and spring. I could not find them on the parts list either, what do they look like and where do they go? What is the correct way to adjust the trigger?
Thanks
Ed
Trigger replacement
Moderators: Bullseye, Moderators
The detent ball and spring go into the underside of the thumb safety button. Often they will simply drop down into the frame and lodge themselves in between the MKIII's plastic spacer and the frame (or heel mag release on a Mark II), they can usually be recovered by simply flipping the frame upside down. Other times they drop out and since they are about 1/4" tend to hide in thick carpet pile - a strong magnet can recover them from carpet and such hiding places.
The detent ball looks like this:
It goes into the thumb safety button here:
Usually the spring will stay in the thumb safety button so look closely. The same detent ball is used in the bolt stop of the 22/45 and fits in a relatively similar position.
You adjust the trigger by inserting the pretravel screw just far enough to take up the extra movement but allow for the disconnector lever to reset during sustained firing. Once you have the setting it is important to use some thread locking sealant on the set screw to prevent it from walking due to recoil vibrations. The overtravel stop is set to take up the movement after the sear breaks at a position as to not interfere with the hammer's free movement. If the screw is set to far in it will allow the hammer hook to strike the sear face and possibly cause a "light strike" on the case. The hammer should not touch the sear face with the trigger pulled all the way rearward.
Hope this helps.
R,
Bullseye
The detent ball looks like this:
It goes into the thumb safety button here:
Usually the spring will stay in the thumb safety button so look closely. The same detent ball is used in the bolt stop of the 22/45 and fits in a relatively similar position.
You adjust the trigger by inserting the pretravel screw just far enough to take up the extra movement but allow for the disconnector lever to reset during sustained firing. Once you have the setting it is important to use some thread locking sealant on the set screw to prevent it from walking due to recoil vibrations. The overtravel stop is set to take up the movement after the sear breaks at a position as to not interfere with the hammer's free movement. If the screw is set to far in it will allow the hammer hook to strike the sear face and possibly cause a "light strike" on the case. The hammer should not touch the sear face with the trigger pulled all the way rearward.
Hope this helps.
R,
Bullseye
