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M4A1 - Carbine Rifle
Origin: USA

Automatic and improved variant of the M4 carbine, which is itself a shorter version of the M16A2 rifle adopted in 1994 by the US Army. It was the standard rifle of USSOCOM elements and special forces around the world, before finding its way into the hands of regular US Army and USMC infantry in large amount of numbers in the 2010s, replacing standard M4s.

Reliability: Medium/High
Accuracy: Good (2A)
Rate of Fire: 750-950 RPM
Caliber: 5.56x45mm
Barrel Profile: 14.5 in
Inventory Size: 5x2

Used by US Army, USMC, UAF, GRM

Trivia:
- American-issued M4A1s are loaded with EPM/Magpul Pmag magazines and 5.56x45 M855A1 EPR loads, which provide enhanced performance (+ reload, RoF, and damage, penetration, due to better mags and higher-pressure ammo). They are also more reliable due to better maintenance.
- GRM got many of these from Iraqi and Afghan stocks, just like how Taliban snatched many from Afghanistan in real life.
- M4A1s are common these days.

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M16A4 - Assault Rifle
Origin: USA

Fourth generation of the M16 series, bringing upgrades such as picatinny rails and removable carrying handle over the legacy M16A2. Was the standard issue of USMC infantry until replaced by M4s and later M27s, now relegated to support and non-infantry units within the Marine Corps. Used by both USMC and US Army (more limited) elements during the previous conflicts extensively.

Reliability: Medium/High
Accuracy: Good (2A)
Rate of Fire: 750-950 RPM
Caliber: 5.56x45mm
Barrel Profile: 20 in
Inventory Size: 6x2

Used by USMC, UAF, GRM

Trivia:
- American-issued M4A1s are loaded with EPM/Magpul Pmag magazines and 5.56x45 M855A1 EPR loads, which provide enhanced performance (+ reload, RoF, and damage due to better mags and higher-pressure ammo). They are also more reliable due to better maintenance. Currently the EPM versions are only available in the Editor.
- GRM got many of these from Iraqi and Afghan stocks, just like how Taliban snatched many from Afghanistan in real life.
- The M16A4 is UAF's primary service rifle, commonly found within the hands of enlisted UAF infantry. Many are sourced from former USMC inventory and FN Herstal.
- Obviously, being a full-length 20 in rifle makes it worse than the M4A1 at closer quarters. This is reflected by its worse performance in CQB in the mod. There are not many reasons to pick it over the M4A1, except for the better ballistics with the longer barrel. US Marines back in Fallujah had to put it over their shoulders, "gangsta" style to clear rooms due to how lengthy it is.

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M16A2 - Assault Rifle
Origin: USA

Originally requested by USMC counting their combat experiences in Vietnam. Second generation of the M16 series, utilizing a heavier barrel profile, 1:7 barrel twist to accomodate the 5.56x45 M855/SS109 loads, new adjustable rear sight, birdcage flash hider, case deflector, and other things. First adopted by USMC before US Army followed suit. Unlike the M16A1, it has semi and burst on the selector rather than auto.

Reliability: Medium
Accuracy: Good (2A)
Rate of Fire: 750-950 RPM
Caliber: 5.56x45mm
Barrel Profile: 20 in
Inventory Size: 6x2

Trivia:
- There is not much difference between the A2 and A4 variant aside from accommodations of rail interface
- GRM got many of these from Iraqi and Afghan stocks, just like how Taliban snatched many from Afghanistan in real life. Was the standard arms of the ANA and Iraqi military.
- One of the most commonly found weapons in GRM arsenal, aside from the M16A4 and M4A1 in large numbers. Can be found used by UAF's rear echelon or militarized police.

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AKM / AKMS - Assault Rifle
Origin: USSR

Improvement over the AK-47, such as using stamped parts instead of milled, making it lighter than the predecessor and more convenient for mass production. Even the most firearms-inept person knows the legendary Kalashnikov that has armed many organizations and people worldwide. Officially replaced in Soviet frontline service by the AK-74 in the late 1970s. Most common variant of Soviet-made AKs. The AKMS is the folding stock variant.

Reliability: Medium
Accuracy: Average
Rate of Fire: +- 600 RPM
Caliber: 7.62x39mm
Barrel Profile: 16.3 in
Inventory Size: 5x2

Used by GRM, UAF, Rebels

Trivia:
- The folding stock variants of AK platforms are more commonly found in the Middle East than the full stock variants, for whatever reasons. Why? Who knows.
- Different varieties of the AKM can be found in the mod, including East German and Romanian variants (MPi-KM-72, PM Md. 65)
- Bakelite 7.62x39mm magazines were made as they were lighter and cheaper to make than steel magazines, and very commonly found in Eastern European theaters and found their way worldwide.

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AK-74M - Assault Rifle
Origin: Russia

Originally designed to replace its parent, the AK-74, as the standard service rifle of the Soviet Army, it was later adopted by the Russian military when the USSR dissolved. Improvements over the previous 74 include glass-filled polyamide folding stock, dovetail side rail, different muzzle brake, plastic furniture, reinforce dust cover, and plethora of other things. Reliable workhouse of the Russian military ever since its introduction.

Reliability: High
Accuracy: Good (2A)
Rate of Fire: +- 650 RPM
Caliber: 5.45x39mm
Barrel Profile: 16.3 in
Inventory Size: 5x2

Used by RGF, Rebels

Trivia:
- Russian-issued AK-74Ms are loaded with 5.45x39 7N10 loads, which provide enhanced performance (+damage, penetration, rate of fire due to higher-pressure ammo).
- The Rebels have mixes of legacy AK-74/AKS-74s and AK-74Ms in their arsenal. Majority of AK-74Ms are supplied by Russian government.
- It is said that it is more accurate than the base AK-74, according to Russian servicemen. With how the rifle is made, it makes sense. It is slightly more accurate than the base AK-74 in-mod.

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AK-74/AKS-74 - Assault Rifle
Origin: USSR

The Soviets were inspired by the performance of 5.56x45mm in Vietnam, and thus requested that Mikhail Kalashnikov build the AK in a new small caliber high velocity cartridge of their own, in 5.45x39mm. Kalashnikov was reluctant of the idea, but the Soviet officials had seen what 5.56x45 did. Thus the AK-74 came in the 1970s and replaced the AKM in Soviet arsenal. It has a new barrel with chrome-lined bore and 4 right-hand grooves, roughly 1:7 barrel twist rate, along with other things compared to the AKM aside from the new cartridge. Softer shooting, extended range, and a bit more reliable than the previous AKs. AKS-74 is folding stock variant.

Reliability: Medium
Accuracy: Good (2)
Rate of Fire: +- 650 RPM
Caliber: 5.45x39mm
Barrel Profile: 16.3 in
Inventory Size: 5x2

Used by RGF, Rebels

Trivia:
- Found in use by Russian rear echelon or conscript personnel due to large stocks in storage.
- Primary service rifle of the Rebels given how many surplus AK-74s are around Eastern Europe. Most heavily used AK variants found in Eastern European theaters in general.
- CIA paid $5,000 for the first AK-74 captured in Afghanistan during the Soviet occupation in the 1980s.
- The AK-74 came in different furniture -- later variants came in plum furniture, along with plum magazines.

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M240 - GPMG
Origin: USA/Belgium

US military variant and designation of the FN MAG, coming in multiple variants. Initially adopted to be used on combat vehicles, it later found its way to be used en masse by the infantry in the 1980s. Belt-fed, gas-operated, air-cooled, crew-served, general-purpose machine gun. Its versatility is demonstrated by its ability to be fired effectively from its integral bipod, mounted on a tripod, on ground vehicles, watercraft and aircraft. The M240L is a shorter and lighter variant, used by US Army infantry. M240B is the standard infantry machine gun in use by USMC and some US Army units. M240C is coaxial mount variant. M240D is pintle mount variant.

Reliability: Medium
Accuracy: Great (3A)
Rate of Fire: Variable
Caliber: 7.62x51mm
Barrel Profile: 24.8 in/21.7 in
Inventory Size: 7x3

Used by US Army, USMC, UAF, GRM

Trivia:
- American-issued M240s are loaded with 7.62x51mm M80A1 EPR loads, which provide enhanced performance (+damage, penetration).
- The M240 is adjustable, in which it can switch between low to high setting, affecting the rate of fire of the weapon. Vehicle mounted ones are typically set to higher setting.
- The M240/MAG is heavier and not as portable as the PK-series machine gun. However, it has less spreading compared to most other GPMGs due to its sheer mass and how it is designed. Use this machine gun defensively.

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MAG - GPMG
Origin: Belgium

Belt-fed, gas-operated, air-cooled, crew-served, general-purpose machine gun. Its versatility is demonstrated by its ability to be fired effectively from its integral bipod, mounted on a tripod, on ground vehicles, watercraft and aircraft. Its action can be described simply as an upside-down BAR. Made under license and served in more than 80 countries, the MAG is the workhorse of many nations and universal GPMG of NATO and their allies.

Reliability: Medium
Accuracy: Great (3)
Rate of Fire: Variable
Caliber: 7.62x51mm
Barrel Profile: 24.8 in/21.7 in
Inventory Size: 7x3

Used by UAF, GRM

Trivia:
- Next to the PKM, it's about the most common GPMG you can find around the world
- Adjustable setting, a common feature in many MAG variants
- The M240/MAG is heavier and not as portable as the PK-series machine gun. However, it has less spreading compared to most other GPMGs due to its sheer mass and how it is designed. Use this machine gun defensively.

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PKM - GPMG
Origin: USSR

If there is any other thing that Mikhail Kalashnikov is known for, it's the PK series of machine guns. The original PK machine gun was introduced in 1961 and the improved PKM variant was introduced in 1969. The PKM was designed to replace the SGM and RP-46 machine guns that were previously in Soviet service. Its internals resemble that of an upside down AK, open-bolt design to accommodate automatic fire as it is a cooler system. Rugged, light, accurate, it can easily be considered an innovation of its time as no other GPMG was as light as it was, and it still is. PKT and PKTM are coaxial mount variants.

Reliability: Medium
Accuracy: Good (2)
Rate of Fire: +- 650 RPM
Caliber: 7.62x54mmR
Barrel Profile: 23.8 in
Inventory Size: 7x3

Used by GRM, Rebels, UAF, RGF

Trivia:
- Unlike most other GPMGs, the PKM can be fired from the shoulder and in standing/unsupported positions better than other GPMGs due to its substantially lighter weight, making it a portably good GPMG and better suited for offensive operations compared to its Western counterpart. the MAG/M240 which is better suited for defensive operations.
- OPFOR infantry may be generally inferior, but remember that the dominant amount of PK series machine guns in their arsenal may provide them with a ranged and portable, powerful automatic firepower advantage.

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PKP - GPMG
Origin: Russia

Improved variant of the PKM, more accurate than its predecessor due to a heavier, removable, partially forced-air-cooled barrel with radial cooling ribs and a handle which eliminates the haze effect from hot gases and keeps the barrel cooler, making the weapon more reliable. As a result, the weapon is slightly heavier than the predecessor. It is the standard infantry GPMG of the Russian military.

Reliability: High
Accuracy: Good (2B)
Rate of Fire: 650-800 RPM
Caliber: 7.62x54mmR
Barrel Profile: 25.9 in
Inventory Size: 7x3

Used by RGF, Rebels

Trivia:
- Basically a better PKM that's a bit beefier, really. Retains the same advantages of the PKM.
- Lower dispersion than the PKM
- PKPs mounted on vehicles are set to fire at higher rate of fire than those carried by infantry.

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MG3 - GPMG
Origin: West Germany

The iconic buzzsaw of World War 2 making a comeback, having only marginal differences compared to its predecessor and chambered in the common NATO caliber of 7.62x51mm. Changes compared to the MG42 include a new chrome-lined barrel, sights calibrated for the new round, heavier bolt, and a few other things. Standardized and adopted into service of the Bundeswehr in the 1950s, it continued the legacy into many other countries, made under license in different corners of the world.

Reliability: High
Accuracy: Average (1)
Rate of Fire: 1000-1200 RPM
Caliber: 7.62x51mm
Barrel Profile: 22.2 in
Inventory Size: 7x3

Used by Bundeswehr, GRM, UAF, Rebels

Trivia:
- Just like its WW2 predecessor, the sheer power and rate of fire of the weapon may intimidate you. Remember that both the M240 and PKM have less spreading than it, however, and that it may have to reload more often given its high cyclic rate. The PKM still has the mobility advantage compared to it (and fires a more potent cartridge). Still, don't take this weapon lightly.

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G36 - Assault Rifle
Origin: Germany

After the failure of planned adoption for the G11 as the Cold War ended, the Bundeswehr needed a cheaper, lighter rifle to replace their aging G3s. Thus, the G36 was made. With a lot of plastic and polymer materials, plus integrated combat sights, the rifle was a bit revolutionary at that time. Popularly exported to many countries, the rifle became the staple of European firearms.

G36A2 is improved derivative with aluminum handguard, better heat dispersion, and better integrated sights.

G36A3 is further updated variant with more picatinny rails, adjustable stock, and more ergonomy.

G36KA4 is the ergonomic carbine variant.

Reliability: Medium/High
Accuracy: Good (2A)
Rate of fire: 750 RPM
Caliber: 5.56x45mm
Barrel Profile: Varies
Inventory Size: 5x2/6x2

Used by Bundeswehr, Rebels, UAF

Trivia:
- The whole accuracy degrading, overheating, crappy rifle issue was a myth stirred up by German soldiers in Afghanistan firing their rifles continuously over a period of time in a heated firefight, along with poorly made ammo. You can do that with an M4 and the result would be similar. These weapons are never designed for that.
- An accurate and reliable rifle, actually passed the InRangeTV mud test, unlike the HK416, due to how sealed it is. Just don't ♥♥♥♥♥♥♥ full auto this ♥♥♥♥.
- Export variants are marked with the "V" designations. (G36KV, G36V)
- G36 uses its own plastic magazines and originally not compatible with STANAG magazines, although it can be converted to accept STANAG. The plastic magazines aren't the best and have obstructive little things that may annoy retention.

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MG4
Origin: Germany

Air cooled, belt fed 5.56mm light machine gun developed by H&K for the Bundeswehr as a squad support weapon to compliment the ever-reliable MG3. The barrel can be replaced quickly without needing a glove.

Reliability: Low
Accuracy: Good (2)
Rate of Fire: +- 890 RPM
Caliber: 5.56x45mm
Barrel Profile: 17.7 in
Inventory Size: 6x3

Used by Bundeswehr, UAF, GRM

Trivia:
- Seen in use by Saudi coalition forces in Yemen, and captured by Yemeni militants
- Initially meant to be the coax of the Puma IFV as well

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MG5
Origin: Germany

Newer GPMG developed by H&K to replace the MG3. With more controllable fire rate, adjustable gas setting, more ergonony, lighter, and more advanced technology in the making, this brings a better GPMG for the 21st century warfare.

Reliability: Low
Accuracy: Great (3A)
Rate of Fire: Variable
Caliber: 7.62x51mm

Used by Bundeswehr, UAF

Trivia:
- The MG5 reportedly suffers from reliability issues, with certain parts cracking under stress or causes serious malfunctions

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VHS-2

Croatian-made bullpup rifle, incorporating ergonomic, convenient, ambidextrous design that is innovative in its category. If there is any great bullpup design, it is this one. Comes in long and short barrel versions.

Reliability: Very High
Accuracy: Good (2A)
Rate of Fire: +- 850 RPM
Caliber: 5.56x45mm
Barrel Profile: Varies
Inventory Size: 5x2

Used by UAF, GRM

Trivia:
- Exported in big quantity, commonly used by Iraqi security forces and special forces
- Has its own magazines, but can be adapted to accept STANAG magazines. Its own magazines are not compatible with G36 magazines.

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RPG-7
Origin: USSR

A very common rocket propelled grenade launcher design of Soviet origin. It comes in a few variants, and it can mount the PGO-7V optical sight. This portable, unguided, reusable AT launcher came as a direct upgrade from the RPG-2.

Caliber: Varies
Inventory Size: 7x2

Used by Literally almost ♥♥♥♥♥♥♥ everyone and their mom

Trivia:
- The Chinese copied it under the designation of PF-69.
- The RPG-7 munition has two sections: a "booster" section and a "warhead and sustainer motor" section. These must be assembled into the ready-to-use grenade.
- Safety cap of rockets must be removed before they are ready to use

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AK-12
Origin: Russia

The AK platform kept evolving from its original AK-47 until the AK-74M and then... a downgrade in many ways, the AK-12. In spite of initial media advertisement, the weapon has failed to deliver much needed performance and reliability expected by Russian soldiers. There are many issues with the weapon, in which the AK-74M in general is still a better choice!

Reliability: Low
Accuracy: Good (2A)
Rate of Fire: +- 700 RPM
Caliber: 5.45x39
Barrel Profile: 16.3 in
Inventory Size: 5x2

Used by RGF

Trivia:
- Free floating handguard, still produces similar accuracy to AK-74M
- The selector is so badly made that you can push the selector past the trigger guard, in which it has presumably gotten Russian soldiers into the 200 status
- More complex than necessary, unreliable weapon as a whole
- The plastic handguard is prone to cracking and lacks a good zero or retention for IR devices
- The idea of 2 round burst on it as a feature was never a good idea to begin with

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M27 IAR
Origin: Germany

A variant of the HK416, equipped with a heavy 16.5 inch barrel, tailored for the needs of USMC. After combat trials in Afghanistan, USMC decided to procure M27 IARs to replace M249s, before adopting the M27 to be issued to most infantry units. At this point, a lot of Marine infantrymen have already adopted it on an en masse scale along with other revisions within the Corps itself.

Reliability: High
Accuracy: Great (3A)
Rate of Fire +- 750-900 RPM
Caliber: 5.56x45
Barrel Profile: 16.5 in
Inventory Size: 6x2

Used by USMC

Trivia:
- The designated marksman variant with its configuration is called the M38 DMR
- New optics are issued for marine infantry as well, including VCOG squad common optics
- Automatic riflemen using the M27 IAR feature a bipod while carrying more ammunition

static M2 and mortar? How do I enable engineers to build one?
I don't see the option.