Para

Fire Breather Nozzle

• The Fire Breather Nozzle is based on the Noveske KX3 "Flaming Pig" flash suppressor, which features an engraved image much like the Fire Breather.
• Looking down the muzzle of a gun upgraded with Fire Breather Nozzle will often show the gun's original muzzle clipping through Fire Breather's model.

Tactical Compensator

• The Tactical Compensator is based on the SureFire MB556K muzzle brake.

Competitor's Compensator

• While not an exact copy, the Competitor's Compensator is based on the JP Enterprises' Standard Profile compensators.

Funnel of Fun Nozzle

• The Funnel of Fun Nozzle is based on the KIES Blast Master linear compensator.
• The Funnel of Fun currently has the highest damage modifier out of all the barrel extensions.

Ported Compensator

• The Ported Compensator is based on the BattleComp 1.0 Compensator.

Auto Fire

• The mod's icon is an AR-15 bolt carrier, or technically the one that the AMCAR and the CAR-4 would use.

Assault Light

• The Assault Light is based on the discontinued SureFire M961XM07 Millennium Universal Weapon Light.

LED Combo

• The LED Combo is based on the Leapers, Inc. UTG LED Weapon light and Laser.
  • 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.

Riktpunkt Magnifier Gadget

• The Riktpunkt Magnifier Gadget is based on the Aimpoint 3XMag attached to a toggle mount. Despite this, the mod's asset file name suggests it was based on the EOTech XPS G33 instead.
  • The magnifier will toggle on and off by itself when in use without any visual input by the player character.
• The JP36 carbines wielded by the GenSec Elites have this gadget installed in conjunction with a Compact Holosight, however it didn't become a player-usable item until 2017.

Signature Magnifier Gadget

• The Signature Magnifier Gadget seems to be based on the SIG Sauer Juliet 3 magnifier.
  • The magnifier will toggle on and off by itself when in use without any visual input by the player character.

Ergo Grip

• This based on the Command Arms UPG16 modular grip in tan, a switch from the rest of the Magpul plastic. The snap-off grip and groove pads make its dimensions customizable to an extent.

Rubber Grip

• This is based on the Hogue Inc. OverMolded soft rubber grip for the AR-15 pattern guns. This particular model doesn't have the beavertail extension at the top.
• The Eagle Heavy cannot accept this attachment, having a rubber grip by default. Improving that rifle is the Pro Grip's only advantage over this one.

Straight Grip

• The Straight Grip is based on yet another Magpul product, the MOE-K grip for AR-15 pattern rifles. It is the one of the only in-game Magpul-made modifications to not have a tan finish.

Contractor Grip

• The Contractor Grip is based on the Hogue Inc. OverMolded pistol grip with finger grooves for AR-15 pattern guns.

THRUST Lower Receiver

• The THRUST Lower Receiver and Upper Receiver are based on the 2A-Arms Billet Upper and Lower Receiver set as evidenced by their string IDs.
  • Equipping the THRUST Lower Receiver also replaces the weapon's default trigger with a Geissele Super Dynamic Combat Trigger, and fixes on an additional Magpul Battery Assist Device that, unfortunately, goes unused during gameplay.
• The left side of the THRUST Lower Receiver bears an embossed stamping mark, reading "MMXV". "MMXV" is "2015" in Roman numerals.

Milspec Mag

• The Milspec Mag was based on the NATO STANAG 30-round magazine. Despite this, none of the weapons capable of using it can achieve this capacity when it is equipped. Those that come with the modification pre-installed such as the AK5 and Queen's Wrath house the correct amount of bullets, however.

Tactical Mag.

• The Tactical Mag was based on the Magpul P-MAG, a derivative of the common NATO STANAG 30-round magazine.
  • Adding it to a weapon strangely does not affect said weapon's Concealment value, despite the mod being finished in a more visible bright tan color compared to the others's metallic black.
  • Before Update #65, the UAR used the Tactical Mag as its default magazine.

CAR Quadstacked Mag

• This modification was based upon the SureFire MAG5-60, though equipping it on the AMCAR and Para only grants a maximum of 50/55 bullets per magazine instead of the correct 60.

Expert Mag

• The Expert Mag is based on the Magpul EMAG. While compatible with most AR-15-based platforms, the EMAG was originally made for, and remains a signature piece in almost every SA80 model (barring the L85A1 which can only use STANAG magazines).
• The Expert Mag has translucent windows on both sides of the magazine shell through which ammo can be seen. As of Update #65, the Expert Mag will visually deplete as the player fires their weapon.
• Despite being shown with the attachment on the Queen's Wrath's old inventory icon, the Expert Mag itself does not come with the rifle by default and requires the player to find it via card drops before they can attach it onto the weapon.
• Stats-wise, the Expert Mag and L5 Magazine are identical in performance, so the only reason to choose the the former over the latter would either be the relative ease of the former's acquisition, or down to aesthetics if both magazines are available to the player.

L5 Magazine

• The L5 Magazine was based on the Lancer Systems L5 Lightweight Advanced Warfighter magazine for AR-15-based rifle platforms.
• Stats-wise, the L5 Magazine is identical to the Expert Mag, so the only reason to choose the L5 over the Expert Mag would either be the relative ease of the former's acquisition, or down to aesthetics if both magazines are available to the player.

Speed Pull Magazine

• The Speed Pull Magazine is not a typical Magazine mod, but rather a dedicated sleeve going around a weapon's magazine that allows for much quicker mag changes in the heat of the fight.
• The various Speed Pull Magazines are based on the Magpul Original Magpul® – 5.56 NATO and Original Magpul® – 9mm Subgun, with the exception of the Kobus 90's, which simply utilizes a yellow strap.
  • Strangely, despite using magazines identical to, using magazines similar to, or capable of using magazines used on other guns compatible with the Speed Pull Magazine, it cannot be equipped on the Compact-5, CMP, Commando 553, SpecOps, Blaster 9mm, Uzi, Clarion, Patchett L2A1, Lion's Roar, Jacket's Piece, and Micro Uzi.
  • The Eagle Heavy is equipped with an Original Magpul® – 7.62 NATO by default, but it does not increase the weapon's reload speed, nor can it be equipped with the Speed Pull Magazine.
• 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.

The Professional's Choice Sight

• The Professional's Choice Sight is based on the Aimpoint Micro T-1.

Surgeon Sight

• This modification is actually a sight + mount combo, consisting of a Docter red dot optic atop a LaRue Tactical Pride-Fowler MRD base.

See More Sight

• The See More Sight is based on the C-More Railway sight. The trademarks on the side is spoofed into "Sey-More".
• This sight can be seen attached to the UMP45 submachineguns fielded by the GenSec Elite SWAT members.

Combat Sight

• The Combat Sight is based on the Aimpoint CS Red Dot Sight.

Speculator Sight

• This modification seems to have been based on a Sightmark Sure Shot, though altered somehow as it has a perfectly vertical lens frame while the supposed base model had a slightly-trapezoidal one.

Trigonom Sight

• The Trigonom Sight is based on the Trijicon RX01 Reflex Sight.