U.m.N.

Walther MP-K
H&K MP5A5
H&K MP-2000
H&K MP7
IMI Uzi
DataDyne CMP-150
Beretta PM-12S
Star Z-62
Sterling L2A3
Ingram Mac-10
Smith & Wesson M76
DataDyne Dragon
DataDyne Super Dragon
Chesluk Industries Cyclone
DataDyne K7 Avenger
Carrington Institute AR-34
Carrington Institute RC-P45
Carrington Institute RC-P90
Carrington Institute RC-P120
Elkoss Combine M-4 Shuriken
Elanus Risk Control M-9 Tempest
Kassa Fabrication M-12 Locust
Lank & Linder Feline
B. Bauer K-Volt
Misriah Armory M7 Caseless
Misriah Armory MA-5K Carbine
Hamilton SMX
Hamilton Vigilance
Hamilton Patriot
Rittergruppen FMP
Rittergruppen Rampage
Rittergrumpen Blitzkrieg
Samael PMG
Samael Storm
Samael Hurricane
Samael Typhoon
UC Inferno
UC RCP
UC Wildfire
UC Purgatory

need 20 more... i'll get on it later

If I may offer a listing of ideas.

If any of these are ones you know of and are gonna use disregard them.

Beretta-12S
FN P-90
H&K Model MP5A3
Spectre M-4 [Note these normally came with a for grip standard]
Calico M961A [Again For grip usually standard]