02-21-2018, 04:14 PM
Glad to hear it's free but just wanted to add something for anyone else troubleshooting a stuck bolt in a new build, especially if you haven't assembled the upper yourself. I had one that was giving me fits trying to diagnose it and it turned out to be a broke / missing fwd assist spring. The FA pawl was coming out and jamming the bolt intermittently and it required separating the upper and lower halves to free it. That was fun, especially with the bolt not returning to battery and being partially in the buffer tube.
- Kirk -