I was attached to 4 or 5 different M16A1s during my 7 years in the USA. When I got out in 1984, carrying a civilian AR didn't interest me at all. I didn't get an AR for 26 years, when I traded with someone on this site for a DPMS Sportical. Later in 2010 I bought a Plum Crazy lower and have built and rebuilt it multiple times, still looking for the configuration that works best for me.