The AK is an assault rifle unlocked immediately upon reaching Level 1. It is an upgrade to the AMCAR that is the default assault rifle available to players, possessing better damage and accuracy, but lower base stability. Unmodified, the rifle can kill any basic enemy apart from Maximum Force Responders, yellow SWAT, and GenSec Elites in a single headshot. Its moderately high stability makes keeping the rifle on target at close to medium range fairly easy, although burst firing may be required for longer distances.
It is a very well-rounded assault rifle, providing a reasonable ammo capacity at the expense of lower damage. Regardless, much like the CAR-4 , the AK is still a very viable and flexible weapon, but only after having DLCs such as the Butcher's AK/CAR Mod Pack.
The Slavic Dragon Barrel was based on the barrel of the short-barreled PM md. 90, a Romanian AKM-based carbine. This specific model was designed for use by tank crews in the closed confinements of their armored vehicles, hence the extra short barrel like the one featured in-game.
It may also be a reference to one of the export names for the short-barrel PM md. 90: "Draco."
The Modern Barrel is based on the short barrel and big flash hider of the AK-104 and AK-105. The shorter barrel also enforces the use of a modified gas piston which would reduce the fire rate of the weapon, a side-effect absent from the final game, likely due to balancing reasons.
The barrel appears to be based off the barrel of the Zastava M76, as evidenced by the string IDs referencing the textures for it bearing 'zastava' and 'm76' in their names.
Operation-wise, it appears that this mod was based on the Zastava M91's barrel instead, as the 7.62x54mmR cartridges it fires are of the same diameter as the 7.62x39mm rounds used by various AK derivatives which in turn enables them to use the barrel mod.
The barrel alone does not usually indicate what designation the weapon has, the DMR qualification usually encompasses the rifle's various accessories such as bipods, grips, scopes and stocks in addition to barrels. A more accurate name for the in-game mod would be DMR Barrel.
The Here Comes the Pain Train achievement refers to the modification as the "DMR Kit AK.762", suggesting that it was originally only intended to be equipped on the AK.762 and not the AK.
This module seems to be based on Tapco's Intrafuse handguard kit for the Saiga with a few alterations. The Picatinny rails on the sides and bottom have been deliberately left unattached and the smooth handrest has been roughened up with electrician's tape for extra grip.
Although the main flashlight has a toggle switch, the laser sight component of the LED Combo is pressure-activated, meaning the laser will stay on as long as the pressure switch is depressed. This switch is not placed where it should be, however (on foregrips, magazine wells, etc...) and is instead ziptied to the main taclight, leaving no plausible mean for the user to toggle it without awkwardly moving their off hand off the weapon and gripping the attachment itself.
Requires a pre-installed sight mod to mount. The magnification level can be changed while aiming down the sights, and the aiming FOV will automatically adjust itself. Not compatible with the Acough Optic, Military Red Dot, Milspec Scope, Combat Sight, Reconnaissance Sight, Theia Magnified Scope, Box Buddy Sight, the JP36's Original Sight, the Raven's Flip-up Sight or the GROM and Platypus 70's iron sights. Currently bugged and not appearing as intended on certain weapons, for a list see here. They're still listed below even if broken.
Due to it supporting a wide array of weapons, the Speed Pull Magazine is the first single modification to have multiple different icons.
The Speed Pull Magazine equips the AMCAR, Para, and AMR-16 with the Milspec Mag., but despite this they neither get increased magazine capacity nor reduced concealability, however it equips the Mark 10 with its Extended Mag and does give it increased magazine size, but does not increase stability nor does it decrease its concealment. Additionally, equipping the Speed Pull Magazine on the AK.762, Golden AK.762, and Krinkov will give them the AK's 5.45mm Bakelite magazine, despite the mismatched caliber.
Upon release, the default reticle of this sight was a chevron instead of the retail version's red dot. After the release of the Gage Mod Courier DLC, it was reverted to the regular sight's red dot.
It is functionally the same as the standard Military Red Dot Sight, but the sight's casing is tan instead of black with the line "A-10" scrawled on near the adjustment knob. The sticker on the lens cap's interior also says "I <3 Payday" instead of having a picture of an American flag.
This sight was based on the Aimpoint CompM2 optic. While it is portrayed as a high-zoom scope in-game, the CompM2 is actually a reflex sight, meaning it offers no magnification in reality.
Visually speaking, the War-Torn Stock is just a Wide Stock with a few miscellaneous items bound to it by a black cable tie.
Judging by the name and its ramshackled appearance, the War-Torn Stock is likely a broken product through repeated use that was salvaged with spare parts, thus would justify its inability to keep the weapon steady during fire.
The Classic Stock is based off of the stock of the AK-74 as evident by the cut groove on the side. It is not entirely "classic", though, as even though the conception of the AK-74 is still fairly early, it is still preceded by the vastly more popular AK-47, which is a true classic.
Alternatively, "classic" here could also refer to the fact that the same stock was used by the AK in PAYDAY: The Heist.
The Vlad's Rodina, according to an FBI File e-mail citing a blog named "Untold War Stories of Eastern Europe" by "Oleksandr Marchenko", was an AK with a bloody history, first in the hands of a Private who was court-martialed for killing two of his own squad with it, then given its name by a "Sergeant Zaytsev" after single-handedly fighting off an ambush with it in the Battle of Grozny (whether this refers to the 1994-1995 battle, 1996 battle, or 1999-2000 battle is unclear, though it's possible all three were merged into a single six-year battle in the PAYDAY universe), and finally finding its way into Vlad's hands while in a Russian mob. The rifle allegedly has an unquenchable thirst for blood.
Like all other AK family variants in PAYDAY 2, this weapon mounts optical sights on an accessory rail between the front and rear iron sight, which is a highly unusual feature as mounting anything but the smallest and lightest weight form of optics would dramatically unbalance the firearm and make target acquisition more time consuming. Most real life AK variants can be equipped with an accessory rail attached via mounting bracket fitted to the left hand side of the weapon's lower receiver above the weapon's pistol grip, this puts the optical sight in a much more traditional location directly over the top of the rearmost portion of the upper receiver. This scope mount was added to the game with the introduction of The Butcher's AK/CAR Mod Pack.
Of all the AK-pattern firearms available in PAYDAY 2, the AK is unique in that only it has, and uses, Bakelite magazines instead of the common metallic ones featured on its many brethren.
Found in the game's texture folder is a mod icon for a scrapped knife bayonet attachment for the AK. Based on the texture image, it was apparently recycled into the Bayonet Knife.