I was talking with my father over the weekend, and he mentioned using .22 caliber M16’s back in the early seventies, as part of basic training.

He does remember they were ‘slick side,’ because he had to learn about the forward assist when his security team transitioned from Mini-14’s to AR’s in the early 90’s. He’s not a ‘gun nut,’ but enjoys firing his M1A and S&W 5906 about once a year. So, he’s not familiar with the GAU’s, etc, and was simply told that he was firing an M16.

The .22 thing threw me off... Is anyone familiar with this?