The only weapon in COD4 as far as I'm concerned was the M4. Tiny recoil and the damage could be made bearable with stopping power. A little red dot sight here and red tiger there and you're set.
That said, it didn't take me long to find thee gun to use in CODMW:
Now I thought I'd be a Thompson guy because it's usually the go to gun in WW2 games. Unfortunately it just kinda flies all over the place and shoots peas. Trying to aim through it's iron sight is sorta balls too.
The Gewehr 43 on the other hand (which for some reason doesn't show up in CODMW weapon lists when you google it) is badass. Semi-automatic, but there's tiny recoil and you can fire off rounds as fast as you pull the trigger. It's like if you were using the sniper rifle but could make a trail of where you want to fire instead. Have rarely had ammo problems, which was usually the case with the M4 until bandolier could be got.
Speaking of weapon lists, most of them I'm running across are kinda off, so here's what's in the beta.
Bolt Action Rifles:
Springfield
Arisaka
Mosin-Nagant
Kar98k
PTRS-41
Rifles:
SVT-40
Gewehr 43
M1 Garand
STG-44
M1A1 Carbine
Submachine Guns:
Thompson
MP40
Type 100
PPSh-41
Shotguns:
M1897 Trench Gun
Double-Barreled Shotgun
Machine Guns:
Type 99
BAR
DP-28
MG42
FG42
Browning M1919
Side Arm:
Cold M1911
Nambu
Walther P38
Tokarev TT-33
.357 Magnum
Primary Grenade:
Frag
N 74 ST
Molotov Cocktail
Special Grenade:
Smoke
Tabun Gas
Signal Flare