As of v.1.2.1 mod, v1.09 base game.
(BOLD is added/tweaked with v.1.1-1.2)

Here is the top of Rangers' Primary weapon list.

VANILLA-ENEMY-GUNS, 1/3
Type 56 (Chinese copy of AK-47)
Type 56 FAdvisor
Type 56 Noob
Type 56 UltraNoob
PM63
PM63 Noob
Mini Uzi
Mini Uzi Folded
AKS 74U
AKS 74U Security
FAL Rifle
SVD63
VSS Vintorez (just as a pickup weapon)
RPK 74 LMG
RPK LMG
RPK16 Short LMG
RP46_MG
SR3_M
Alpha AK (just as a pickup weapon)
SxS Shotgun
SMLE Bolt Action Rifle
MP40 (v1.0 Rabble MP40)
M16 WM (v1.0 Warlord Militia / Irregulars Trooper)
M14 WM (v1.0 Warlord Militia Sergeant / Irregulars Sergeant)
M249 WM (v1.0 Warlord Militia Machinegunner / Irregulars Machinegunner)
M240 WM (v1.0 Warlord Elite Heavy Gunner / House Guard Corps)
MK14 GL WM (v1.0 Warlord Militia Grenadier / Irregulars Grenadier)
SVU SSI (v1.0 SSI Marksman)
MP7 Holo (v1.0 just as a pickup weapon)

VANILLA-RANGER-GUNS, available by stars
(Omitted)

VANILLA-ENEMY-GUNS, 2/3
Alpha AK Spectre Sup Tango (Generic Tango)
Cruiser Shotgun (Generic Tango)
Melee Weapon (v1.0 Melee Guy)
Executioner Sword (v1.0 Melee Executioner)
M79 GL Basic (v1.0)

VANILLA-RANGER-GUNS, available by BH
XM7 or XM250

WESTERN-ENEMY-GUNS in the main file
MP5A: Spray Rabble, Balanced- Noob, Balanced Veteran, Spray & Pray Expert
MP7: Spray Rabble, Balanced- Noob, Balanced Veteran, Spray Expert
MP5KPDW: Stormtroop
M4: Balanced Rabble, Balanced2- Noob, Balanced2 Veteran, Balanced Expert, Blackhead, Emir
M16A4: Tap Fire Rabble, Tap- Noob, Tap Veteran, Tap Expert
M16A2: WM CritNerf, LR WM CritNerf
Mk17STD: Veteran, Expert
MK17/GL: WM Red
M249: NWS Veteran, WM Mag100
M240L AP: Veteran
M110A1 AP: Expert
MK17LB AP: SSI (mod v.1.2.1, changed the default scope from "LR Optic 3.5-10x" to "Combat Optic 4x", because the SSI Sharpshooter doesn't use the default scope!)
M500 Shotgun Strong: Rabble, - Noob, Veteran, Expert
MK14 GL: WM Red
M79 GL Basic: Red

VANILLA-ENEMY-GUNS, 3/3
APC9K Sup FAdvsior (just as a pickup weapon)
AKM Blackhead (with scope, for Blackhead Elite)
AKS 74U Emir (with scope, for FAdvisor Leader)
Bren 2 Short FA Storm (v1.0 FA Fanatic Stormtroop (G))
M16LR WM (v1.0 Warlord Militia LongRange / Irregulars Trooper- just added scope on M16 WM)
MK17 WM (v1.0 Warlord Elite / House Guard Corps)
MK17/GL WM (v1.0 Warlord Elite Heavy / House Guard Corps- just added GL and changed scope above)
AUG SSI Sup (v1.0 SSI Assaulter)
AUG LR SSI Sup (v1.0 SSI Leader)
P90 SSI Sup (v1.0 SSI CQB Assaulter)
SVU SSI (mod v.1.2.1, changed the default scope from "PSO 3-9x" to "PSO-1 4x", because the SSI Sharpshooter doesn't use the default scope!)
(Note: P90 SSI is NOT used in the base game.)

WESTERN-ENEMY-GUNS in the optional file
MP5A: Tap Noob, Tap Veteran, Tap Expert, Spray Noob, Spray Veteran, Balanced Noob
MP7: Tap Noob, Tap Veteran, Tap Expert, Spray Noob, Spray Veteran, Balanced Noob
M4: Tap Noob, Tap Veteran, Tap Expert, Spray Noob, Spray Veteran, Spray Expert, Balanced Noob, Balanced Veteran, Balanced2 Noob
M16A4: Spray Noob, Spray Veteran, Spray Expert, Tap Noob
M110A1: Expert (v.0.6.5)
M14EBR: Expert
M500 Shotgun: Noob, Veteran, Expert, Strong Noob

Here is the bottom of Rangers' Primary weapon list.


Here is the top of Rangers' Secondary weapon list.

VANILLA-ENEMY-GUNS, 1/2
TT 33 Pistol
AT4 PICKED (FA Fanatic Stormtroop or as a pickup weapon)
MP5K WM (v1.0 Warlord BodyGuard / Valkyries Guard)
M18 Pistol Security (v1.0 Bodyguard Heavy Pistol)

VANILLA-RANGER-GUNS
(Omitted)
(Note: v1.0 Fake Hostage uses M9 Pistol of Rangers, without any doctrine)

WESTERN-ENEMY-GUNS in the main file
M9 Pistol: Rabble, - Noob, Veteran, Expert
G2240 Pistol: Rabble, - Noob, Veteran, Expert
1911 Pistol: Rabble, - Noob, Veteran, Expert

WESTERN-ENEMY-GUNS in the optional file
M9 Pistol: Noob
G2240 Pistol: Noob
1911 Pistol: Noob

VANILLA-ENEMY-GUNS, 2/2
1911 Pistol Enemy  (v1.0 just as a pickup weapon)
FS57 SSI Sup (v1.0 SSI Pointman)
FS57 SSI (v1.0 SSI non-Pointman)

Here is the bottom of Rangers' Secondary weapon list.