I see lots of ppl using Enfields (L85s) and G36Ks with silencers on co-op Tango Hunts. These rifles come with dot scopes (or at least 2x, not as powerful as the ACOGs but it's a freebie), and the silencers help with accuracy and stability.
But what are some of your favorite kit choices?
I ran through all the #s one night and found the M14 w/ Silencer would probably be the most powerful CQB/Medium Range rifle (irons only tho) while the HK G36K w/ Silencer is the second (L85 and M16/M4 w/ Silencer drops a few damage points).
For pistols, the Mk 23 + Hi Cap mag would probably be the best secondary weapon???? The Desert Eagles limit mag capacity and aren't as stable. But from what I've seen, I have never run out of primary ammo or secondary ammo: Either the objective has been completed or my character dies.
I always take a full load of frags (6) for door breaching, room clearing, and cheap/easy kills through 2nd/3rd floor windows.
I just wish the M67s were more powerful - like Lloyd's Mods for Rainbow Six Rogue Spear/Urban Operations. You could blast out all the windows from an entire room with 1 nade, and take out like 9 tangos at a time.
The Rainbow Six 3 frag nades are like flashbangs with a bit more oomph.