Have you ever wondered how to assemble an AR lower receiver and were curious what free resources are available? I spent some time on Youtube and collected a list of videos that show the viewer how to assemble a lower receiver for an AR-type rifle. I would recommend watching several as each presenter’s methods has pros and cons plus there are different details and camera angles in some cases.
“Gunsmithing – How to Build an AR-15 Lower Receiver” by MidwayUSA
“EASIEST AR15 lower build diy, step by step” by dutchofsc
“AR-15 Lower Receiver” by bgallaher77
I really liked all of the above and hope you find them useful.