That's a group fired with iron sites at 25 yards. The center-to-center variation is less than a dime diameter.
I did a rapid fire with the 30-round mag, and you couldn't even see down the shooting lane afterward! It was fun. Cleaning the rifle afterwards, however, was not. :D
good stuff EDD :D looking fkn hard there Marshall, sup baby girl haven't seen you since back in teh otf days (my fault for not visiting here enough) Much recoil on the M16? I could never own a weapon for it's illegal to own a weapon of any kind over here, I can't even have a knife on me when I ...