Yeah the video loses credibility when he says retap the pistol grip mounting hole. Should be edited out before someone ruins a lower. Someone should have stepped up, that shouldn't have made it to prime time.
M, I haven't looked at the upper video, will have to soon. Thanks for posting them!
The biggest issue with assembling an AR isn't so much getting the parts together right - it's getting the right parts together. You'll remember the quality of a gun long after you forget how much you paid for it.
US Army 1966-69, VFW Life Member, Retired Geek