AR spring malfunction
OK all you AR gurus out there...I have a question for you. I returned my Trijicon reflex to my AR after finishing up deer season(I use the reflex on my slug gun also) & went out to sight it back in. Just about had it dialed in when the weapon failed. I had loaded 20rds in a Pmag & was about 4 shots into the string when it happened. There was a round in chamber, didnt know whether live or not, & trigger was locked up. Tried to clear by retracting the bolt, but would only come back about 3/4inch. I ended up having to pull both reciever pins to clear the round. It was fired, so malfunction occured after shot but before ejection. When I pulled the upper away from the lower a mangled spring fell out. I can't tell you where it came from or what it originally looked like. Even after the lower was removed, the trigger is still locked up.
I assembled this from a stripped DPMS lower, a RRA lower parts kit, and a Tactical Machining upper about 18mos ago. I know I should remember all the springs & such but its been a rediculously reliable weapon since assembly. I havent thought much about it. I will tear into it myself, but thought Id ask here in case someone had a place in which to start or an idea as to which spring failed & maybe why.
Thanks for the help,
People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf.