Just found this animation on the working mechanism of an AR-15 a bit ago.
Might be worth a look...
Be aware that this may be a compromised site.
I wanted to share it with some new to the AR platform friends I've brought online and the options to send to my email brought up several out of the country folks that are using my email.
Obviously some of the spammers that are hitting my account including my IPhone.
I'm working on how to delete them but not having success at this time.