I picked up an AR and a parts(no lower) piece awhile back but being new to the game how does one identify all the different components? An upper marked BCM or barrel stamped Stag is pretty obvious but bolt carriers and triggers along with much more have little to no markings so what's a guy to do?
I did see the Sticky on triggers and maybe that'll help but many look very much like the next.
I did see the Sticky on triggers and maybe that'll help but many look very much like the next.


















































