It's amazing how fast one can run at a time like that, isn't it?
I carried a M-203 for years by request under my M-16A2. That's what it sounded like and the tube was about the same diameter.
You soldier boys get to have all the fun. I haven't even fired an M-16 in over 4 years.
Although I liked the M-203, I requested it, if there was one available, for selfish reasons also. I didn't want to get stuck with a f'n M-249 SAW.
When my wife was in the Army, she was 5' tall and weight about 105lbs. They always tried to make her carry the M-249. Ya'll are a bunch of sadistic ****ers.