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.