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 ?


Mine worked the first time until I disassembled it and reassembled it. I figured out the same thing you did, but I messed with it a bunch (including not installing the recoil spring assembly just in case it was the barrel lug and locking block–now obviously not it)
I can see how the beta testers could have missed it because it got stuck 4 out of 5 times at first (my first successful try was a fluke), then I was able to figure out a technique to get it seated correctly every time. But even if seated correctly, if you just nudge the guide rod a teensy bit you’d hear it slip and it would get stuck, lol
It’s good it’s fixed now but the struggle to figure out what was going on was actually pretty useful to me, I’m now way more familiar with the internal workings than I was at the start (not the first time this kind of thing happened in 3D2A, of course)