first build-trigger pin issues

[van7559]

I finally got to shoot some lead to day out of a build I cobbled together. I installed a PSA LPK into a PSA lower, and am having issues with the pins that hold the fire control group walking out to the left. I have seen KNS?? pins I thought were for this, but was wondering if there was any other tricks to making the ones I have work?

[cofi]

i would try new pins or make sure yours are fully seated if you installed then from left to right you may not have pushed them all the way in

[DFBrews]

make sure your lower is machined in spec as well. I had a dpms lower that was machined off and the pins would walk out just a little bit. they never fully came out but would always move from centered
http://farm9.staticflickr.com/8282/7818914680_cdde384a19.jpg (http://www.flickr.com/photos/34834090@N02/7818914680/)
IMAG0050 (http://www.flickr.com/photos/34834090@N02/7818914680/) by post_james86 (http://www.flickr.com/people/34834090@N02/), on Flickr

http://farm9.staticflickr.com/8296/7818917212_f56081a9f3.jpg (http://www.flickr.com/photos/34834090@N02/7818917212/)
IMAG0051 (http://www.flickr.com/photos/34834090@N02/7818917212/) by post_james86 (http://www.flickr.com/people/34834090@N02/), on Flickr

http://farm9.staticflickr.com/8435/7818919426_a21225912f.jpg (http://www.flickr.com/photos/34834090@N02/7818919426/)
IMAG0052 (http://www.flickr.com/photos/34834090@N02/7818919426/) by post_james86 (http://www.flickr.com/people/34834090@N02/), on Flickr

[BPTactical]

KNS pins are good bits.

[van7559]

I think I'm gonna go with the kns pins they seem to be a good thing for your buck

[ray1970]

This may sound stupid, but did you make sure you installed the trigger pin in the trigger and the hammer pin in the hammer?

I have seen some newer pins that are machined for either application but some still have designated pins for the trigger and the hammer.

In the picture below the hammer pin is on the left and the trigger pin is on the right.

https://encrypted-tbn2.google.com/images?q=tbn:ANd9GcQiaprPU81Hlqr4ymVfw8lnJQdlqGrdf UxaAUjnMoZuWTiLeCdS

If your pins look like the ones in the picture below they will go in either location.

https://encrypted-tbn2.google.com/images?q=tbn:ANd9GcR5W6NuzKnjYs0NcZ48w6kn5G-u-y8s4FsyAVK8IfcKuLs2R9aR

[van7559]

I am gonna go check ray. thanks for the heads up.

[ray1970]

Let me know what you find. I've heard many stories about trigger pins walking out but I have never experienced it myself. [Awesom]

[O2HeN2]

Worse comes to worse, you could install a what I refer to as a stamp protector (http://www.knsprecisioninc.com/gun-parts-and-accessories/trigger-hammer-pins/gen-2-non-rotating-trigger-hammer-pins.html).

O2

[Hoser]

I have KNS pins on almost all my ARs.

[cofi]

I have KNS pins on almost all my ARs.


i heard they dont work with geissele trigger is that true??

[spongejosh]

I have KNS pins with my Geissele SD-E and it all went together and works just like stock.