My Dad and three brothers were in the services during WWII. Oddly, only one went overseas. (European campaign.) Also, strange that of the 10 boys born to them I was the only one to go to Vietnam. So only two of 13 with combat duty.
The biggest issue with assembling an AR isn't so much getting the parts together right - it's getting the right parts together.
US Army 1966-69, VFW Life Member, Retired Geek