T91 Assault Rifle - Taiwan

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T91 Assault Rifle
The T91 assault rifle is produced by the 205th Armory, Ministry of Defense, Republic of China (Taiwan). It is based on the proven T86 assault rifle incorporating features from the M16 and AR-18 rifles with more modern features. The T91 is lighter and shorter than the T65 it replaces and has a 6-position telescopic stock to allow adjustment based on individual requirements.

T91 assault rifle is a gas-operated short-stroke, air-cooled, rotating bolt, magazine- or drum-fed, select-fire, modularized military rifle compatible with various tactical accessories. Similar to its predecessor, T91 is a shorter version of the T65K2 assault rifle, giving the operator higher mobility and ease of aiming in confined space.

T91 has a 4-position selector switch: S – safe, 1 – semi-automatic, 3 – three-round burst, and A – automatic. Like the T65K2, T91 utilizes an M16A2-style front post, rear peephole sight. The rear sight, mounted on the detachable handle, is adjustable for windage and elevation. Operation of the charging handle, magazine release, and bolt release are the same as the M16. One notable difference is that the T91 does not have a forward assist, and the brass deflector is not as pronounced.

The action of the T91 is based on the T65 series. However, parts are not interchangeable because the bolt lug on the T91 is shorter by 1 mm. T91 also inherits the modularized gas piston system from the T86, allowing easy removal for maintenance without the risk of losing small parts.

The telescopic stock on the T91 was designed based on the experience of military and police personnel with the M4 Carbine. The resulting product has improved recoil transfer and handling qualities. A rubber recoil pad is also added for comfort. The handguards are triangular in shape

T91 assault rifle has a 407 mm (16.0 in) barrel with flash suppressor. Rate of rifling twist is 178 mm (7.0 in). Due to the use of a shorter barrel, the T91 has 20% more recoil than the T65K2. Average group size at 175 m (191.4 yd) also increased by 10 mm (0.39 in). The chamber and bore are chrome-lined and can fire all 5.56x45mm NATO ammunition. Standard-issue 30-round magazines for the T91 feature indicator holes for the top 2-15 rounds as well as two protrusions on each side to avoid over-insertion. However, standard STANAG magazines may also be used.

T91 assault rifle has a MIL-STD-1913 rail on the top of the receiver, handguard, and the front-sight block. The standard-issue detachable handle may be removed to accommodate a variety of optical sights and scopes. T91 can also be equipped with the T85 40mm grenade launcher to serve as squad-level fire support.

The Chung Shan Institute of Science and Technology developed a T91 indoor shooting simulator for infantry marksmanship training. This equipment is capable of simulating various weather, shooting distance, and wind conditions.

Other attachments are red dot sights or holographic weapon sights similar to EOTech.

T91
Type Assault rifle
Place of origin ROC (Taiwan)
Service history
In service 2003-present
Used by See Users
Production history
Designed 2002
Manufacturer 205th Armory
Produced 2003-present
Number built 140,000+
Specifications
Weight 3.17 kg
Length 880 mm (stock extended)

800 mm (stock retracted)

Barrel length 406 mm

Cartridge 5.56x45mm NATO
Action gas-operated, rotating bolt
Rate of fire 800-850 RPM
Muzzle velocity 975 m/s
Effective range 600 m
Feed system Various STANAG Magazines.
Sights M16A2-style sights with windage and elevation adjustments
Picatinny railing can be used for mounting various optical sights
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