« | The TRG-21 is a bullpup assault rifle used by the FIA. It features an ergonomical design that supports accurate fire in harsh conditions. TRG-21 is lightweight, ambidextrous, easily serviceable and compatible with a large number of accessories. TRG-21 EGLM is mounted with an enhanced grenade launching module. A carbine variant is labeled TRG-20. Compared to TRG-21, it features a short barrel better suited for close quarters combat situations. Field Manual[1]
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The TRG-20 is a 5.56 mm bullpup carbine used by both Altian government Loyalists and FIA guerillas in ArmA 3.
Overview[]
The TRG-20 is a carbine variant of the baseline TRG-21. As with its parent weapon, it is chambered to fire 5.56×45 mm NATO ammunition.
It loads from the same 30-round STANAG magazines used by the TRG-21 rifle, and can attain a fire rate of up to 750 rounds per minute[CfgWp 7][Formula 1] but has a lower muzzle velocity of 840 m/s instead.[CfgWp 8] The TRG-20 has the same ability to mount accessories on its top[CfgWp 9] and side[CfgWp 10] rails, and can also be fitted with a 5.56 mm sound suppressor.[CfgWp 11]
The TRG-20 is ideal for use in close quarters thanks to its shorter barrel which imposes a reduced inertia penalty (0.3 versus the TRG-21's 0.4).[CfgWp 5] With a weight of only 60 "mass" units (a~ 15% reduction in weight compared to its parent rifle)[CfgWp 3], the TRG-20 is also one of the lightest primary weapons in ArmA 3. Most notably, it is both small and light enough to fit into a Leg Strap Bag, meaning that snipers can bring it along as a backup weapon if necessary.
However, because its barrel length has been cut, its accuracy is poorer since its dispersion has been significantly increased by up to ~ 28%. This similarly results in a lower muzzle velocity of 840 m/s (a reduction of ~ 9%). Combined with the high air drag of its 5.56 mm ammunition[CfgAm 1], the TRG-20 has an effective firing range of no more than 400 metres.
Ironsights[]

The TRG-20's ironsights can be zeroed starting from a minimum of 100 metres up to a maximum of 600 metres (100, 200, 300, 400, 500, 600).[CfgWp 12] By default, it is set to a zeroing of 200 metres.[CfgWp 13] Both the front and rear sight are illuminated; the front sight post features an illuminated dot while the rear sight has strips on all four sides of the ring. They emit a pale green glow in daytime but appear brighter under low-light conditions.
If an optical sight with a zeroing limit greater than 600 metres is attached onto the top rail (e.g. Nightstalker), the TRG-21 will allow for an absolute maximum zeroing of 800 metres.[CfgWp 14]
Ammunition[]
NOTE: Due to the TRG-20's reduced muzzle velocity, fired ammunition will always scale to an initial velocity of 840 m/s instead.
Ammo parameter | 5.56 mm NATO (Ball) | 5.56 mm NATO (Tracer) |
---|---|---|
Base damage value | 9[CfgAm 2] | 9[CfgAm 3] |
Aerodynamic friction | -0.0012[CfgAm 1] | -0.0012[CfgAm 4] |
Muzzle velocity (m/s) | 920 [CfgMa 2][note 1] Actual: 840 [CfgWp 8][note 2] |
920 [CfgMa 3][note 1] Actual: 840 [CfgWp 8][note 2] |
Expected velocity (m/s) | 920 [CfgAm 5][note 3] |
920 [CfgAm 6][note 3] |
Penetration depth (mm) | 11.999997 [CfgAm 7][Formula 2] Actual: 10.956519 [Formula 3][note 4] |
11.999997 [CfgAm 8][Formula 4] Actual: 10.956519 [Formula 5][note 4] |
Deflection angle (degrees) | 15°[CfgAm 9] | 15°[CfgAm 10] |
TRG-20s can load up to six types of magazines.[CfgWp 15] All of its magazines share the same weight of 8[CfgMa 4] "mass" units. They are available in either a Black or Sand colour finish.
It should be noted that although these STANAG magazines are interchangeable with any 5.56 mm NATO-chambered weapon (Mk20/SDAR/SPAR-16), 150-round drums utilised by the SPAR-16S cannot be loaded into the TRG-20:
5.56 mm 30rnd Reload Tracer (Yellow) Mag[]

30-round STANAG magazine loaded with a mix of 5.56 mm NATO ball and tracer ammunition.[CfgMa 5]
The last four rounds of the magazine will always emit visible yellow tracers.[CfgMa 6]
5.56 mm 30rnd Reload Tracer (Red) Mag[]

Alternate STANAG magazine that is also loaded with 5.56 mm NATO ball ammunition. Where it differs is its usage of red-coloured tracers as opposed to yellow.[CfgMa 7]
Aside from firing different coloured tracers, it remains statistically identical to the standard yellow tracer STANAGs (the last four rounds of the magazine will always emit red tracers).[CfgMa 8]
5.56 mm 30rnd Reload Tracer (Green) Mag[]

Alternate STANAG magazine that is also loaded with 5.56 mm NATO ball ammunition. Where it differs is its usage of green-coloured tracers as opposed to yellow.[CfgMa 9]
Aside from firing different coloured tracers, it remains statistically identical to the standard yellow tracer STANAGs (the last four rounds of the magazine will always emit green tracers).[CfgMa 10]
5.56 mm 30rnd Tracer (Yellow) Mag[]

Dedicated 30-rounder STANAG magazine loaded exclusively with 5.56 mm NATO yellow tracer ammunition.[CfgMa 11]
Aside from its tracer-exclusive loadout[CfgMa 12], this magazine is statistically identical to the standard mixed load 5.56 mm STANAGs.
5.56 mm 30rnd Tracer (Red) Mag[]

Alternate STANAG magazine loaded with red tracer ammunition instead of yellow.[CfgMa 13]
Other than its red tracer-exclusive loadout[CfgMa 14], this magazine is also statistically identical to the standard mixed load 5.56 mm STANAGs.
5.56 mm 30rnd Tracer (Green) Mag[]

Alternate STANAG magazine loaded with green tracer ammunition instead of yellow.[CfgMa 15]
Other than its green tracer-exclusive loadout[CfgMa 16], this magazine is also statistically identical to the standard mixed load 5.56 mm STANAGs.
Magazine compatibility[]
STANAG_556x45 | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Weapon name (Classname) |
5.56 mm 30rnd Reload Tracer (Yellow) Mag![]() |
5.56 mm 30rnd Reload Tracer (Red) Mag![]() |
5.56 mm 30rnd Reload Tracer (Green) Mag![]() |
5.56 mm 30rnd Tracer (Yellow) Mag![]() |
5.56 mm 30rnd Tracer (Red) Mag![]() |
5.56 mm 30rnd Tracer (Green) Mag![]() |
5.56 mm 30rnd Reload Tracer (Yellow) Sand Mag![]() |
5.56 mm 30rnd Reload Tracer (Red) Sand Mag![]() |
5.56 mm 30rnd Reload Tracer (Green) Sand Mag![]() |
5.56 mm 30rnd Tracer (Yellow) Sand Mag![]() |
5.56 mm 30rnd Tracer (Red) Sand Mag![]() |
5.56 mm 30rnd Tracer (Green) Sand Mag![]() |
TRG-20 5.56 mm (arifle_TRG20_F) |
✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
Reaction Forces Creator DLC only | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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NOTE: The following table only applies if the third party-developed Reaction Forces Creator DLC is activated.
It should be noted that if the Western Sahara Creator DLC is also active, any compatible magazines from that DLC are also added to this pool of compatible magazines. |
Western Sahara Creator DLC only | ||||||||||||||||||||||||||||||||||||||||||||||||
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NOTE: The following table only applies if the third party-developed Western Sahara Creator DLC is activated.
It should be noted that if the Reaction Forces Creator DLC is also active, any compatible magazines from that DLC are also added to this pool of compatible magazines. |
Trivia[]
- Like its parent counterpart, the TRG-20 is directly based on the "Tavor" family of bullpup weapons designed by Israel Weapon Industries (IWI). More specifically, it is based on the "CTAR-21" which is a short-barrelled variant of the baseline "TAR-21" rifle.
- Before the release of Game Update 1.22, dispersion values on the TRG-20 and TRG-21 were strangely reversed. Prior to the patch, the TRG-20 (carbine) was more accurate than the TRG-21 (rifle).[2]
Gallery[]
Config/script references[]
CfgAmmo
CfgMagazines
CfgWeapons
Formulae
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Notes[]
- ↑ 1.0 1.1 This muzzle velocity value only applies to the magazine itself. Although the TRG-20's initSpeed value is lower (840 m/s), it takes precedence over the magazine's initSpeed value (920 m/s) since it is not defined as a coefficient (the weapon's initSpeed overrides the magazine's initSpeed since it is not a multiplier).
- ↑ 2.0 2.1 This is the TRG-20's actual muzzle velocity. The weapon class initSpeed value (840 m/s) takes precedence over the magazine initSpeed value (920 m/s).
- ↑ 3.0 3.1 Damage will be reduced if the projectile's velocity drops below this value.
- ↑ 4.0 4.1 This is the actual penetration depth of the TRG-20's 5.56 mm ammunition. The weapon class initSpeed value (840 m/s) takes precedence over the magazine initSpeed value (920 m/s), affecting its penetration formula as a result.
References[]
- ↑ Hlava, B et al. 2014, Arma 3: Field Manual - Weapons Info, Bohemia Interactive Community Wiki, viewed 6 March 2025, <https://community.bistudio.com/wiki/Arma_3:_Field_Manual_-_Weapons_Info>.
- ↑ 2.0 2.1 van 't Land, J.J. 2014, SPOTREP #00027, Arma 3, viewed 10 September 2023, <https://dev.arma3.com/post/spotrep-00027>.
External links[]
See also[]
Variants[]
Weapons of comparable role and configuration[]
![]() | |
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Handguns | ACP-C2 .45 |
Carbines | TRG-20 5.56 mm |
Assault rifles | Mk20 5.56 mm • TRG-21 5.56 mm (TRG-21 EGLM) |
Designated marksmen rifles | Mk14 7.62 mm |
Squad automatic weapons | Mk200 6.5 mm |
Launchers | MAAWS Mk4 Mod 0 • RPG-42 |
Static | M2 • Mk6 Mortar • SPG-9* |
(Parenthesis) denote variants. * this weapon is not available in a standalone turret configuration and is only available as a vehicle-mounted weapon. Marksmen DLC | Apex DLC | Tanks DLC |
![]() | |
---|---|
Handguns | ACP-C2 .45 |
Carbines | AKS-74U 5.45 mm • Mk20C 5.56 mm • TRG-20 5.56 mm |
Assault rifles | AK-12 series (AK-12, AK-12 GL) • AKM 7.62 mm • Mk20 5.56 mm (Mk20 EGLM) • SPAR-16 series (SPAR-16, SPAR-16 GL) • TRG-21 5.56 mm (TRG-21 EGLM) |
Designated marksmen rifles | Mk14 7.62 mm • Mk18 ABR 7.62 mm |
Squad automatic weapons | LIM-85 5.56 mm • Mk200 6.5 mm |
Launchers | RPG-7 • RPG-42 |
Static | M2 • Mk6 Mortar |
(Parenthesis) denote variants. Marksmen DLC | Apex DLC |