Today's service rifle and sidearm.

[p246]

The 75th is still holding onto it’s Glocks, but big Army will eventually prevail. The M4 in well trained hands have served us well. The FAL in 7.62 Kurtz or 280British would have been nice to see. Obviously it would still be old tech by now.

[Former Cav]

If I was young and healthy like I was when I was 18 to 21, and had my pick today, I'd take the SCAR 17 and the good old fashioned 1911 in a double stack version in 45 ACP of course. If I could not have the SCAR then I'd go with the good old M14.
I've shot it in matches. I got the "mouse gun" when I got into my Armored cav unit in late 1967. they took away all the M14's.