I use my G&P M4 Sentry with a 4x ACOG and a foregrip. I can use it at my local CQ site which is in some old WW2 tunnels, and I can use it at a more open site such as my local woodland site.
I too keep my Glock by my side! (Tokyo Marui Glock 17)
M4 or M4 CQBr PTW, HurricanE SR-47, or HurricanE Shrike tend to be my go-to guns. Honestly, more often than not, my PTWs are the guns I use since I'm almost always in a leadership position. I rarely get to snipe anymore...
Yeah I'm also mostly sniping but it's good fun to have a rambo-session once in a while! Also good to experience what's it's like to be the hunted when there's a sniper about, this way you know how your enemy may react when you're the hunter.
If not sniping or playing as designated marksman, I'll use my CA Scar for field play or run with just my KWA g19 in smaller environments.
In CQB matches I'll use either my G&P stubby m4, CAW grenade launcher, or double barrel shotgun.
Pretty much always sniping, and when I'm not, it's usually a crappy walmart spring pistol I end up falling back to, and only on the one occasion my gun has broken in field (trigger sears went bye-bye). I'm trying to get a KWA MP7 for when I feel the need to not use my rifle.