Hello everyone, I am new to the AR15 platform. I have been looking around the web for answers to my questions, but I have yet to find anything useful, so I figured I'd post on here. I am wanting to more deeply understand how the internal components of the lower receiver of an ar-15 works. Here are some questions you guys can hopefully help me with:
1. What position is the hammer in after firing the last shot and the bcg is locked to the rear? What I mean is, is the hammer retained by the disconnector, by the actual trigger at the sear, or does it fall forward freely? This is assuming if you let go of the trigger, as per usual when firing the last round in a mag.
1.5. What if you empty a mag and don't let go of the trigger, in what position would the hammer be in?
2. If the disconnector is retaining the hammer, is the firearm still considered "cocked". Or does the hammer need to be held in place at the sear (by the trigger) for the firearm to be considered cocked?
3. If the trigger is released while the bolt is locked back, what is preventing the hammer from falling forward?
4. Can the hammer engage the sear if the BCG is locked in the rearward position?
5. What happens if you pull the trigger when the BCG is locked rearward?
Thank you to everyone that can give their input on this. I am a bit OCD when it comes to things like this, so please don't roast me for my dumb questions.