You should consider adding more generic weapons to this. Such as more CS stuff.
A weapon is a weapon. (Glock, to AT-4.) Yes; people have preferences, but what he finally puts in the pack is his chose.
Now On Topic: Nice pack!
You want suggestions...? Here's a few.
Pumpgun-Sorry, can't think of any at the moment.
Sniper Rifle's-H&K PSG-1
H&K SL8-6
Remington M40 Rifle
Barrett M82A1
Accuracy International L96A1
Unique Alpine TPG-1
Light Machine Guns-FN M249 SAW
FN M240B
Steyr AUG HBAR
Type 95 LMG
German MG 3
M60E4
H&K MG36
Sub Machine Guns-H&K MP5 &/or MP5 K
H&K MP7
H&K UMP
Steyr TMP
Steyr AUG Para
Type 05
FN P90
Assault Rifle's-Steyr AUG
FN FNC
FN F2000
FN SCAR
Type 95
FAMAS
H&K G3
H&K G36 (K, or C)
Tavor TAR-21
AK-47
AK-74
Colt M16
Colt M4
XM8
XM29 OICW
Sorry about the long post, but just trying to help you with ideas.
Anyways, keep up the good work!