I cant pull back the slide all the way. The thing is completely built… trigger pin, charging handle, etc. However, I cant pull the slide all the way back… The slide fits onto both front/rear rails. I just cant pull the slide beyond that. I can take the slide down using the takedown button. So… what am I missing here ?
Ive built numerous glock frames… so not a newbie…
Thoughts ?


“appropriately sized steel washer in half and epoxying one half to the front of the guide rod stop.”
ill just wait for the corrected design and/or an official USK release. thanks for your support here … glad i wasnt the only one who experienced the same.