I can pretty much live without most of them other than a decent trigger and plenty of magazines. Night vision capability is a plus. But then I used a .45 Government Model and Grease guns for most of my military career other than the times that I used a Rem in .308 or .300 Win Mag. The Black Rifle as issued in the '60s, '70s and early '80s was somewhat of a bust but it did progress.

Go tell the Spartans,Travelers passing by,That here,Obedient to their laws we lie.

I'm older now but I'm still runnin' against the wind