Recently bought an Elftmann Tactical AR10 trigger. Dropped it in the other day and was having issues getting it to reset. Also when I installed the upper back on to the lower the bolt wouldn't cycle; it was binding on the hammer. Called Elftmann and they were really helpful. He asked for some pictures of the trigger, I sent them to him, and he was able to recognize that somehow during assembly I got an old style trigger shoe and disconnect with a new style hammer. He mailed me the correct parts and I was able to put them in today. Completely solved the reset issue but my bolt still binds on the hammer and will not cycle. Any ideas? I will get with Elftmann again tomorrow; just wanted to see if anyone had this problem before or had any ideas how to fix it.