Semper Paratus Arms

One thing that I constantly see as a failure area in assembly with AR's is the castle nut installation and torque/staking of the end plate. Whenever someone decries the "MILSPEC", I often times laugh, because many cannot meet the "MILSPEC".

According to the internet, receiver extensions and castle nuts never come loose. In my classes that I have been teaching for almost 7 years now, I see a large number that are incorrect and demonstrate it in class.

One does not need a degree in Nuclear Physics to understand why this is bad. Here is one recent video that we did in my last class in Keizer, Oregon hosted by Coat of Arms. This first video explains a little about the castle nut issue, followed by the torque issue. *Warning- Some people may be triggered upon learning that many high dollar AR's are failing this*