Well I put about a case of surplus through my rig before starting to notice the gremlin. It at first would only happen with a slow trigger pull, but this past weekend it started after 1 to 2 rounds of firing. I actually had to beat on the receiver to get the bolt to go forward so I could take it apart and clean. I had a good look inside and this is what I found.
The pin shown at point 1. was sliding from side to side about 1 - 1.5 mm. If it was pushed to the left ( when looking from the back ) everything worked but when pushed to the right the sear would not work and there was a slight clicking noise. Have a look at point .2 and you can see about a mm of spring showing there. I could slide the sear to the left and pull the trigger 2-3 times and it would slide to the right and disconnect.
I pulled the pin out and had a look and sear rotates on 2 sleeves that sit on the main pin going through the body. I made a shim and put it between the main pin going through the body and the sleeve and then put it all back together. It took a few light taps to get the main pin through all the way but now everything sits tight.
You can see the shim at point .3 and you can see at point .4 where the whole sear has been moved over and is now engaging properly. I pulled the trigger probably a hundred times and there is no lateral movement at all and it seems to have tightened everything up and now everything is functioning well. I will take it to the range and post on how it holds up.
Hopefully that will fix some peoples gremlin, and get them shooting again.
The pin shown at point 1. was sliding from side to side about 1 - 1.5 mm. If it was pushed to the left ( when looking from the back ) everything worked but when pushed to the right the sear would not work and there was a slight clicking noise. Have a look at point .2 and you can see about a mm of spring showing there. I could slide the sear to the left and pull the trigger 2-3 times and it would slide to the right and disconnect.
I pulled the pin out and had a look and sear rotates on 2 sleeves that sit on the main pin going through the body. I made a shim and put it between the main pin going through the body and the sleeve and then put it all back together. It took a few light taps to get the main pin through all the way but now everything sits tight.
You can see the shim at point .3 and you can see at point .4 where the whole sear has been moved over and is now engaging properly. I pulled the trigger probably a hundred times and there is no lateral movement at all and it seems to have tightened everything up and now everything is functioning well. I will take it to the range and post on how it holds up.
Hopefully that will fix some peoples gremlin, and get them shooting again.
