Here is some more gun ideas I have that I was thinking about.
Assault Rifles: M16A3, SIG SG 550, AEK 971, SCAR-H
SMGs: MSMC, QCW-05, PP-2000
LMGs: M249, QBB-95, Ultimax 100,
Shotguns: High Standard Model 10, TOZ-194, Ranger
Sniper Rifles: PSG1, XM2010, Gepard anti-material rifle
Handguns: M9-T, Colt SOCOM, AMT AutoMag V
Machine Pistols: TMP, PDW,Claridge Hi-Tec
Launchers: FIM-43 Redeye, LAW 80, LRAC F1
Also if you don't know what the M9-T is well the T means tranquilizer and my idea is if you get shot by the gun it will hinder your vision and stun you for 25 seconds.