Because of the complexity and sheer size of this pack, I've split the arsenal guide into this discussion. Magazine sizes are Match/standard/Suppressive.

Ammo: SMG
Magazine Size: 10/30/60
Accepts: Optic, 5.45 Suppressor, Foregrip, Rail Att, Ammo Mod.
Description: Soviet assault rifle. Reliable, effective workhorse, used to this day. This version is specifically the AK-74N variant.

Ammo: SMG
Magazine Size: 10/30/60
Accepts: Optic, 5.45 Suppressor, Foregrip, Rail Att, Ammo Mod.
Description: Soviet assault carbine. Carried mainly by Soviet helicopter crews during the Soviet-Afghan War, which made it a desirable trophy among Mujahideen fighters. One of these was Osama's personal weapon.

Ammo: SMG
Magazine Size: 10/45/90
Accepts: Optic, 5.45 Suppressor, Foregrip, Rail Att, Ammo Mod.
Description: 5.45mm squad assault weapon. Essentially an AK-74 with a long barrel and LMG furniture. Fires slightly slower than the AK-74.

Ammo: AR2
Magazine Size: 10/30/40
Accepts: Optic, 7.62 Suppressor, Foregrip, Rail Att, Ammo Mod.
Description: Early Soviet assault rifle. Powerful rounds, but not as accurate as most other rifles, not as steady due to a lightweight underfolding stock.

Ammo: AR2
Magazine Size: 10/30/75
Accepts: Optic, 7.62 Suppressor, Rail Att, Ammo Mod.
Description: AK-47 "pistol" based on a Romanian WASR rifle, sold to American civilians. Of course, this version's integrated foregrip makes it an SBR, and thus unimportable; it is also automatic, which doesn't help either.

Ammo: AR2
Magazine Size: 10/40/75
Accepts: Optic, 7.62 Suppressor, Foregrip, Rail Att, Ammo Mod.
Description: AK-47 based squad assault weapon. LMG furniture and long barrel improve sustained fire characteristics. Like all LMGs, equipping Suppressive ammo will help to unlock its true potential.

Ammo: AR2
Magazine Size: 10/20/30
Accepts: Optic, 7.62 Suppressor, Foregrip, Rail Att, Ammo Mod.
Description: Very early Soviet/Eastern-Bloc semi-automatic carbine. Replaced with the AK-47/AKM early on due to obviously limited capabilities. This version is the SKS-D, which accepts detachable magazines.

Ammo: AR2
Magazine Size: 20/30/75
Accepts: Optic, 7.62 Suppressor, Foregrip, Rail Att, Ammo Mod.
Description: A "Khyber Pass Special" SKS with extremely short barrel, automatic fire capability, and folding stock, designed to serve as a submachine gun role. God only knows who would make an abomination like this.

Ammo: AR2
Magazine Size: 10/20/30
Accepts: Optic, Magnifier, .308 Suppressor, Foregrip, Rail Att, Ammo Mod.
Description: Belgian battle rifle. Once considered the "right arm of the free world" due to its ubiquitous use in the hands of Western militaries. Packs a serious punch at long ranges.

Ammo: Shotgun
Magazine Size: 10/20/30
Accepts: Optic, Shotgun Suppressor, Foregrip, Rail Att, 12G Ammo Mod.
Description: Galil-based 12-gauge semi-automatic hunting shotgun. A development of the Lior-12 originally created for the civilian market by Arctic Combat Tactical Industries. One would almost think this was a solution to create a Saiga-like shotgun without using a Saiga.

Ammo: SMG
Magazine Size: 20/30/60
Accepts: Optic, Magnifier, 5.56 Suppressor, Foregrip, Rail Att, Ammo Mod.
Description: The classic M4A1, used by armies around the world. Needs no introduction. While the original Colt M4A1 did not have a railed handguard, this version has a KAC railed handguard installed for mounting tactical equipment.

Ammo: SMG
Magazine Size: 20/30/60
Accepts: Optic, Magnifier, 5.56 Suppressor, Foregrip, Rail Att, Ammo Mod.
Description: Very similar rifle to the M4A1, save for a solid stock and lengthened barrel, as well as being limited to only three-round-burst fire mode.

Ammo: SMG
Magazine Size: 20/30/60
Accepts: Optic, Magnifier, 5.56 Suppressor, Foregrip, Rail Att, Ammo Mod.
Description: Even shorter barreled M4A1. Has a faster fire rate than it, and worse accuracy. Used by Naval special forces due to its compact form factor.

Ammo: Pistol
Magazine Size: 15/21
Accepts: Optic, Pistol Suppressor, Pistol Att, Ammo Mod.
Description: Standard issue handgun of the US military, until it was replaced by the SIG P320. Basic 9mm handgun.

Ammo: Pistol
Magazine Size: 7/12
Accepts: Optic, Pistol Suppressor, Pistol Att, Ammo Mod.
Description: Former standard issue US military handgun. .45 ACP packs a heftier punch, but isn't as effective over range.

Ammo: Pistol
Magazine Size: 8/15
Accepts: Optic, Pistol Suppressor, Pistol Att, Ammo Mod.
Description: 9x18mm handgun used by the Soviet military and police. Lightweight, reliable, and ubiquitous, but somewhat lacking in firepower.

Ammo: AR2
Magazine Size: 10/20/30
Accepts: Optic, Magnifier, .308 Suppressor, Foregrip, Rail Att, Ammo Mod.
Description: DMR based on the M14 pattern of rifle. The M14 was the shortest-serving main rifle of the US military, but lives on to this day as more specialized marksman weapons. This version is semi automatic only and fits a Sage International chassis.

Ammo: AR2
Magazine Size: 5
Accepts: Optic, Magnifier, .308 Suppressor, Foregrip, Rail Att, Ammo Mod.
Description: Bolt-action military sniper rifle based on the Remington 700. Damage ramps up over distance. When an optic is not installed, a set of basic low profile iron sights are used. To load, open the bolt and insert rounds into the chamber.

Ammo: SMG Grenade
Magazine Size: 1
Accepts: Optic, Magnifier, Rail Att.
Description: 40mm M203 grenade launcher mounted on some sort of standalone adapter kit based on an M4. While "professional" adapter kits exist, this one has been created seemingly with sharp tools. Still, it works just fine. Open the chamber and load a road into the breech.

Ammo: AR2
Ammo: SMG Grenade
Magazine Size: 1
Accepts: Optic, Magnifier, Foregrip, Rail Att.
Description: GP-25 grenade launcher mounted on some sort of standalone adapter kit based on an AKS-74U. Due to the nature of Soviet bloc weaponry, no real official standalone adapter exists, which may be why this was built. Load from the front.

Ammo: Shotgun
Magazine Size: 1
Accepts: Optic, Pistol Att
Description: Standard flare gun. Fires 25mm flares.

Ammo: Pistol
Magazine Size: 1
Accepts: Optic, Pistol Att, Pistol Suppressor, Ammo Mod.
Description: Flare gun with 9mm firing adapter.

Ammo: SMG
Magazine Size: 30/100/200
Accepts: Optic, Magnifier, 5.56 Suppressor, Foregrip, Rail Att, Ammo Mod.
Description: Belt-fed LMG. The single heaviest, most powerful weapon in this entire pack, capable of putting out massive quantities of fire. Accepts STANAG magazines. To use belt boxes, insert a box, open the cover, grab the belt from the box, and place it into the gun, then close the cover. Rack the charging handle, and you're ready to fire.

Ammo: Shotgun
Magazine Size: 35
Accepts: Optic, Magnifier, Shotgun Suppressor, Foregrip, Rail Att, 12G Ammo Mod.
Description: Belt-fed automatic shotgun. Not an official FN product. Appears to have been created by some sort of mad gunsmith. Works very similarly to the M249.

Ammo: Shotgun
Magazine Size: 8
Accepts: Optic, Shotgun Suppressor, Foregrip, Rail Att, 12G Ammo Mod.
Description: Pump-action shotgun made by Mossberg. Nothing very exciting. Insert rounds in the bottom of the gun, grab the forward grip, and rack, then fire.

Ammo: Shotgun
Magazine Size: 6
Accepts: Optic, Shotgun Suppressor, Foregrip, Rail Att, 12G Ammo Mod.
Description: Russian pump shotgun with pistol grip. Still nothing exciting. Very similar to the M590.

Ammo: Shotgun
Magazine Size: 1
Accepts: Optic, Shotgun Suppressor, Foregrip, Rail Att, 12G Ammo Mod.
Description: Shotgun based on the Cobray Terminator, regarded by some as the "worst gun ever made". Remarkably, this model is significantly more reliable compared to the Cobray, which has a very small chance to even fire at all. Uniquely, this weapon is essentially slam-fire, just like the kind of shotguns people build out of Home Depot parts. This thing isn't much better. Open the bolt, insert a shell.

Ammo: Pistol
Magazine Size: 6
Accepts: Optic, Pistol Suppressor, Pistol Att, Ammo Mod.
Description: .38 Special revolver. Root, toot, pistol shoot! Use secondary fire/firemode button to open the cylinder and insert the rounds. Pull towards you to eject spent cases.

Ammo: SMG
Magazine Size: 10/20/30
Accepts: Optic, Magnifier, 5.56 Suppressor, Foregrip, Rail Att, Ammo Mod.
Description: Semi-automatic carbine. Made by the Ruger company as a "ranch rifle", it was poorly received due to high costs and poor reliability compared to the AR-15 pattern. This model has polymer furniture and a forward rail.

Ammo: AR2
Magazine Size: 5
Accepts: Optic, Magnifier, .308 Suppressor, Foregrip, Rail Att, Ammo Mod.
Description: Ancient bolt-action rifle. Fiddly bolt. Move it up and back, not around and back. Long since obsoleted, but still finds use as a hunting rifle. Relatively inaccurate. As this is the Infantry model, it uses a specialized scope mount to attach optics. Damage ramps up over distance. To load, open the bolt and insert rounds into the chamber.

Ammo: AR2
Magazine Size: 5
Accepts: Optic, Magnifier, .308 Suppressor, Foregrip, Rail Att, Ammo Mod.
Description: Cut-down Mosin-Nagant rifle. Kicks like a mule. Makes a hell of a fireball. To load, open the bolt and insert rounds into the chamber.

Ammo: Pistol
Magazine Size: 15/30/45
Accepts: Optic, Pistol Suppressor, Rail Att, Ammo Mod.
Description: 9mm submachine gun made by HK. The quintessential SMG. Official reload procedure is to pull back the charging handle, lift up to lock it in place, switch magazines, and then slap it to release the bolt.

Ammo: Pistol
Magazine Size: 10/25/40
Accepts: Optic, Pistol Suppressor, Foregrip, Rail Att, Ammo Mod.
Description: .45 ACP submachine gun made by HK to replace the MP5. Slower firing and more controllable than the MP5. While the same reload procedure can be used as with the MP5, the UMP-45 also has a bolt release that can be used instead.

Ammo: Pistol
Magazine Size: 10/30/50
Accepts: Optic, Pistol Suppressor, Rail Att, Foregrip, Ammo Mod.
Description: Integrally suppressed 9mm British SMG. A development on the STEN. Controllable and slow firing. Open-bolt.

Ammo: Rockets
Magazine Size: 1
Accepts: Optic, Rail Att.
Description: Soviet anti-tank rocket launcher. Rocket has poor blast characteristics but does tremendous damage on a direct hit.