G&G Armament GTW91-P T91 Assault Rifle AEG

G&G Armament
Code:
£299.99
  • High-density polymer receiver
  • G2 ETU & MOSFET inside
  • 4 Position selector with 3-round burst

If you collect modern military replicas and don't have the service rifle of the Taiwanese military, G&G has your back! The GTW91-P T91 Assault Rifle AEG is part of G&G's GT Advanced training rifle range, equipped with a magazine cutoff system which stops the rifle from firing when the included magazine runs dry. This is the -P version, constructed with a high density polymer receiver but otherwise matching the metal-to-polymer proportions of the real T91.

Inside, we're treated to G&G's G2 MOSFET and ETU system, the refined version of the original G2, which is more compact than ever before, far more resistant to faults, and now includes pre-cocking along with the usual 3-round burst and 5-round burst programmable options. The gearbox itself is a reinforced V2 with 18:1 steel gears running on 8mm brass bushings, a padded piston head, double o-ring nozzle and quick-change spring system. G&G's much lauded 25K Orange IRFIT high-speed motor delivers the speed needed for snappy double taps, and a quick-change spring system makes power tuning a breeze.

Also inside is G&G's latest rotary HOP-up unit design, a superb quality rotary with tactile clicks as you adjust, a big improvement over the previous gear-style unit. If you're after a rare rifle with AR-15 lineage but packed with perks and ready to rock on 11.1V LiPo batteries, the G&G Armament GTW91-P T91 Assault Rifle AEG should be your next primary!

Full description

Description

Whether you're working on a Taiwanese Military loadout or you love a realistic build which stands out, the G&G Armament GTW91-P T91 Assault Rifle AEG should be in your sights! A top-notch replica of the real steel T91 assault rifle with realistic trademarks, fantastic attention to detail and G&G's elite GT Advanced series internals, this is the "-P" version, equipped with a high-density polymer receiver but otherwise perfectly matching the metal-to-polymer proportions of the real deal.

Inside, the T91 is rocking G&G's GT Advanced series internals, including a newly designed reinforced V2 gearbox with 18:1 ratio steel gears running on 8mm brass bushings. The piston head is padded to reduce impact force on the gearbox shell, and the nozzle is a double O-ring type, enhancing air seal and minimising shot-to-shot FPS deviation. The quick-change spring guide allows for easy spring swaps without opening the gearbox shell, and the impressive 25K Orange IRFIT motor provides an incredible trigger response and rate of fire, toe-to-toe with G&G's game-changing ARP9.

The G&G G2 MOSFET and ETU provide programmable fire controls and allow for reliable performance using 11.1V LiPo batteries, something few UK market AEGs can boast straight out of the box. This G2 MOSFET is the mid-life refined version, a more compact unit with improved reliability and the option to run pre-cocking added, along with the usual 3 and 5-round burst fire mode options. If you like a super-serious military-style replica with performance to challenge G&G's more player-friendly ARP series, the G&G Armament GTW91-P T91 Assault Rifle AEG will put a big smile on your face!

Starting at the front, we can find a detailed reproduction of the T91 multi-port flash hider, a combination device with a flash-concealing cage at the front and muzzle brake-style ports towards the rear, designed to both reduce felt recoil and conceal the shooter's position in real steel form. While this is the perfect device for the issued T91 look, you can swap it out with ease for any of the most common Airsoft tracer units and suppressors thanks to the barrel's 14mm CCW male threading.

Moving rearwards, we can take note of the outer barrel's "pencil" style profile, included in the real T91 to keep the rifle light and allow the barrel to cool more quickly between short-duration firefights. Following the barrel back brings us to the front sight/gas block, complete with a steel dummy gas key at the front and an adjustable front sight post at the top, protected on either side with wings to prevent bumps and scrapes from messing up your sight picture.

On the left side of the gas block, we can find a steel sling point which is mounted on a rotary swivel, ready for a two-point sling to be mounted using the sling slots on the stock. If you don't run a sling, you can rotate the sling point to sit almost flush with the handguard, preventing snags, so you maintain in-game agility. On the bottom of the gas block, we're equipped with a short 20mm Picatinny rail ideal for mounting a tactical flashlight, bipod or vertical foregrip.

Next up, we come to the handguards of the T91, a unique design made from G&G's top-notch high-density polymer with a realistic crackle textured finish and no flex, wobble, or movement to be found. The top features threaded holes designed to mount a grenade launcher ladder sight, but the more technical people may be able to source a rail which will fit. The bottom is adorned with ribs to improve traction, and the top features ventilation ports to help the piston operating system stay cool in the real steel.

The handguards also serve as the battery compartment, requiring the pin at the front to be pushed through from the left side of the rifle and removed. With the pin removed, you can slide the lower handguard forward and lever it off the rifle. Beneath the handguards, you'll find a mini-Tamiya battery connector to which you mount your choice of battery. We recommend an 11.1V 1300mAh LiPo in crane/nunchuck configuration for an easy fit and beastly 11.1V performance!

As we arrive at the receiver, things start to look familiar, but only if you don't look too closely! The layout closely matches that of the M4/AR-15, but the fine details all match the real T91 rifle perfectly. The cam pin bulge on the left side of the upper is squared off, and the bolt catch recess is extended. Over on the right side of the upper, we're missing the brass deflector and forward assist of the M4, and instead we have a clean, snag-free shape which matches the real steel T91 to a tee.

The lower receiver is a similar story. At a glance, you would be forgiven for thinking this is a standard M4 lower, but the fire selector has something special in store! A four-position selector switch similar in shape to an M4/AR-15, the T91 selector offers 4 fire modes: safe, semi-auto, 3-round burst and fully automatic. Like the M4, the selector increments are 90 degrees, but unlike the M4, this selector can be rotated 360 degrees, meaning even if you're laying down full auto, it's only a short throw to safe mode.

On the left side of the magazine well, we are treated to authentic trademarks which perfectly match the real steel T91, including calibre and arsenal markings. While the receiver is made from G&G's fantastic polymer, you would be hard pressed to tell, thanks to the precise nature of the markings, perfectly imitating engraving on forged aluminium. The magazine release is on the right side of the magazine well, easily within reach of the trigger finger when the T91 is held in a firing grip.

Pulling back the charging handle, located at the top rear of the receiver, will open the dust cover and retract the mock bolt carrier to allow access to the rotary HOP-up adjuster. This is the latest G&G HOP-up unit design for the M4/AR-15, providing tactile clicks with each adjustment increment and holding its setting more effectively compared to the older gear-style HOP-up unit. The pre-installed HOP-up bucking is G&G's green cold-resistant bucking, a superb bucking which will provide consistent HOP-up performance all year round. With your HOP-up adjustment complete, you can hit the "ping-pong paddle" style bolt release catch on the centre left of the receiver to send the mock bolt home with a satisfying "clank".

On top of the receiver, we can find a detachable carry handle made from aluminium with an integral rear iron sight. The rear sight offers two apertures for aiming, a fine aperture for accurate semi-auto fire and a wider aperture for full auto fire and low-light engagements. Windage adjustment is provided by a dial on the right side and requires no tools to get your zero perfect. The carry handle is a big part of the T91 look, but if you're running an optic, you'll be happy to learn that beneath the carry handle, we have a 20mm Picatinny receiver rail. To remove the carry handle, simply loosen the thumb screws on the right side and lift it free.

The pistol grip is a refined "A2" based design with a reprofiled finger ridge and a wider lower section, filling out the hand comfortably while reducing fatigue-causing hot spots. This grip is far more comfortable than the A2 in our opinion, being more similar in feel to aftermarket ergonomic pistol grips than the marmite A2.

At the rear, we're equipped with a 3-position M4/AR-15 buffer tube, allowing you to extend or shorten the length of pull to suit your body type and loadout. This 3-position tube is unique to the T91 but accepts practically any M4/AR-15 aftermarket sliding stock, just in case you fancy a style-up. The pre-installed stock is a unique design based around the 1990s era M4A1 "CAR-15" stock, but features an angled butt plate for ease of use with body armour vests and plate carriers. The stock also features a "footman loop" sling slot, ideal for conventional rifle slings.

Inside, the T91 is equipped with the usual G&G GT Advanced series goodness, including the mid-life G2 MOSFET and ETU, a padded piston head, double O-ring nozzle and quick change spring guide. The V2 gearbox shell is significantly reinforced along the spine, and the 18:1 steel gearset runs on 8mm brass bushings for smooth, friction-free performance.

The impressive 25K Orange IRFIT motor from the ARP series provides an impressive trigger response and a killer rate of fire, especially when run on an 11.1V LiPo battery. The G2 MOSGET is the more compact later-life upgrade model, offering 3 or 5-round burst fire modes and pre-cocking to crank the trigger response up to near-instantaneous!

If you're looking for a platform which stands out visually but is an easy transition from an M4/AR-15 platform, the G&G Armament GTW91-P T91 Assault Rifle AEG is one to watch. A rock-solid build with all the realistic details and performance to rival the best, the T91 is the ideal primary for the military-leaning skirmisher who likes a unique primary!

Features

  • High-density polymer receiver - Alloy outer barrel, gas block, buffer tube & trim
  • GT Advanced series - G2 MOSFET & ETU inside, programmable fire modes
  • Stop firing on empty function - Won't fire without a mag unless the catch in the magwell is held down
  • 14mm CCW Male threaded outer barrel - Tracer/suppressor ready
  • T91 Multi-port flash hider - A perfect match for the real deal, gunmetal grey finish
  • 20mm Picatinny railed gas block - Perfect for a tactical flashlight or bipod
  • Steel dummy gas key - A realistic touch to complete the T91 look
  • Ghost ring/aperture iron sights - AR-15 style, windage adjustable on the rear sight, elevation on the front
  • 20mm Picatinny railed receiver - Ready for a red dot sight or scope
  • Removable carry handle - Integrated ghost ring rear iron sight, loosen the nuts to remove it
  • M4/AR-15 style controls - Easy to use for those experienced with the M4 platform
  • 360° 4-position fire selector switch - SAFE - SEMI - 3RND BURST - FULL AUTO
  • T91 Finger ridged pistol grip - Similar in looks to an "A2" grip, but much more comfortable
  • M4/AR-15 style Milspec low-profile charging handle - Reduced snag potential
  • Rotary adjustable HOP-up unit - G&G's latest design, accessible with the charging handle pulled
  • Functional mock bolt catch - Press the bolt catch on the left side to release the mock bolt carrier
  • 3-Position M4/AR-15 buffer tube - Adjust the stock to suit your needs, fits M4/AR-15 aftermarket stocks
  • T91 Sliding stock - Similar to the 90's era M4A1 stock with a sloped butt plate for use with body armour
  • Version 2 gearbox:
    • 18:1 Steel gears
    • 8mm Brass bushings
    • Padded cylinder head
    • Double O-ring nozzle
    • Reinforced shell
    • Quick-change spring system
    • 25K Orange IRFIT High-speed motor
  • Programmable MOSFET functions:
    • 3-Round burst
    • 5-Round burst
    • Pre-cocking
  • Front wired: Mini-Tamiya connector - Recommended battery: 11.1V 1300mAh LiPo in crane/nunchuck config.
  • Compatible with M4/AR-15 AEG magazines - G&G Magazines recommended

Package Includes

  • G&G Armament GTW91-P T91 Assault Rifle AEG
  • 125rnd Medium capacity magazine with cutoff feature

Special Instructions

The G&G Armament T91 features what is known as a "Stop firing on empty" or "magazine cutoff" function. This means that the AEG cannot be dry-fired like a standard AEG without holding down the catch inside the magazine well.

The original magazine supplied with the T91 will feed until empty and stop the AEG from firing when ammo runs out. With standard M4/AR-15 magazines, the T91 will continue to fire when the magazine is empty but will not fire with the magazine removed. You don't need to do anything to recommence firing; simply insert a loaded magazine and you're ready to rock.

Specification

General

Weapon Construction External
Platform Type
Assault Rifle
Over 18 Only Icon
Over 18
Yes
Icon UKARA - United Kingdom Airsoft Retailer Association
Defence / UKARA Required
Yes, No,
Screwdriver Icon
Prebuilt
Yes
Package
Included Items
Magazine
Skill Level Icon
Skill Level
Regular Player
Patrol Base - Warning Icon
Warnings
Li-Po
Li-Po - Never Leave Charging Unattended
Li-Po - Only Use Approved Chargers
Li-Po - Charge in a Fire Safe Area

Weight and Dimension

Weight KG Icon
Weight (KG)
Approx.2.673KG
Weapon Length Collapsed
Length
81cm
Weapon Length Extended
Length (Extended)
89.5cm

Construction

Colour Wheel Greyscale
Primary Colour
Black
Construction Icon
Construction
Alloy flash hider, outer barrel, buffer tube & trim parts. Steel body pins, dummy gas adjuster, front sling point, dust cover & carry handle nuts. High density polymer receiver, stock & grip.

Weapon Specific

Power Source Icon
Powered By
Electric
Blowback Icon
Blowback
None
Weapon Platform
Weapon Platform
Assault Rifle, T91 Assault Rifle,
Magazine Style Icon
Magazine Style
Long Gun Magazine, Assault Rifle, M4 / AR Platform,
Fire Select Icon
Fire Selector
PatrolBase | Fire Select Safe
Safe
Patrol Base | Fire Select - Semi Automatic
Semi Automatic
Patrol Base | Burst
Burst
Patrol Base | Full Automatic
Full Automatic
Programmable
Weapon Safety Features Icon
Safety Features
Trigger Lock
Shooter Configuration Icon
Shooter Configuration
Right Handed
Weapon Configuration Icon
Weapon Configuration
Standard
Weapon Scale Icon
Weapon Scale
1:1
Suggested BB Weight
Suggested BB Weight
0.25g

Hop-Up

Hop-Up Unit Adjuster Icon
Hop-Up Adjuster
Rotary
Hop-Up Unit Location Icon
Hop-Up Location
Inside the ejection port, accessible with the charging handle pulled.

Furniture

Weapon Furniture Icon
Furniture
  • Railed Receiver
  • Finger Ridged Pistol Grip
  • AR Buffer Tube
  • Sliding Stock
  • Aperture iron sights
  • Removable Carry Handle
  • sling points front and rear
  • Bayonet lug
  • Ribbed handguards
  • Railed Gas Block
  • Multi-port flash hider
Rail System Icon
Rail System
20mm RIS / RAS, 20mm Railed Receiver, 20mm Railed gas block,
Icon Stock Positions
Stock Setting
Sliding, Multi-Position,
Weapon Length Extended
Stock Positions
3 Position
Sight Type Icon
Sight Type
Iron Sights, Aperture Iron Sight,
Sling Plate Icon
Sling Options
Stock, Loop, Gas Block,

Barrel

Outer Barrel Length (in)
16''
Icon Thread Type
Outer Barrel Thread Type
Male
Icon Thread Direction
Outer Barrel Thread Direction
CCW (Counter Clockwise)
Outer Barrel Thread Size
Outer Barrel Thread Size
14mm
Inner Barrel Diameter
Inner Barrel Diameter
6.08mm
Inner Barrel Length
Inner Barrel Length
380mm

Magazine Specific

Magazine Type
Magazine Type
AEG, Medium Capacity,
Magazine BB Capacity
Magazine BB Capacity
Approx. 125 Rounds

Electric Gun Specific Information

Gearbox
Gearbox Icon
Gearbox Version
V2 Gearbox
Wiring Icon
Gearbox Wiring
Rear Wired
Spring Change Icon
Gearbox Quick Change Spring
Yes
Digital Trigger Icon
Gearbox Electronic Trigger
Yes
Motor
Airsoft Motor Icon
Motor Type
High Speed
Battery Specific
Battery Connector
Battery Connector
Patrol Base | Icon | Mini Tamiya
Mini Tamiya

Testing

FPS Icon
FPS, using 0.20g BBs
Approx.330fps ± 10%, using 0.20g BBs

Product Testing Data

Notepad Icon
Test Description
330 FPS +/- 10%
Notepad Icon
Tested Using
0.20g Delta Armory Diamond BBs
Notepad Icon
Test Date
11/09/2025

Size guide

Joule Charts

Special Instructions

These table can be used as a reference to see if the BB weight you are using will be over acceptable Joulage limits at some Airsoft Sites in the UK. To check if the weight can be used chrono your weapon using the BB you intend to use, and then compare it to the chart.

FPS, Power and Joule Limits can vary from site to site, so please get in touch with where you're going to play with in advance to avoid disappointment.

Suggested limits are based on Joulage Limit rules used Halo Mill: Proving Grounds, with a 350fps limit for Automatic Replicas, 400fps for Semi-Automatic Replicas, and 500fps for Bolt Action Replicas.

Tap the tabs below to open the relevant chart for your replica.

Suggested limits are based on Joulage Limit rules used Halo Mill: Proving Grounds, and is the equivalent of 350fps, using 0.20g BB resulting in an upper limit of 1.14j.

Velocity BB Weight (Grams)
FPS 0.20 0.25 0.28 0.30 0.32 0.36 0.40 0.43 0.45 0.50
250 0.58 0.73 0.81 0.87 0.93 1.05 1.16 1.25 1.31 1.45
260 0.63 0.79 0.88 0.94 1.00 1.13 1.26 1.35 1.41 1.57
270 0.68 0.85 0.95 1.02 1.08 1.22 1.35 1.46 1.52 1.69
280 0.73 0.91 1.02 1.09 1.17 1.31 1.46 1.57 1.64 1.82
290 0.78 0.98 1.09 1.17 1.25 1.41 1.56 1.68 1.76 1.95
300 0.84 1.05 1.17 1.25 1.34 1.51 1.67 1.80 1.88 2.09
310 0.89 1.12 1.25 1.34 1.43 1.61 1.79 1.92 2.01 2.23
320 0.95 1.19 1.33 1.43 1.52 1.71 1.90 2.05 2.14 2.38
325 0.98 1.23 1.37 1.47 1.57 1.77 1.96 2.11 2.21 2.45
328 1.00 1.25 1.40 1.50 1.60 1.80 2.00 2.15 2.25 2.50
330 1.01 1.26 1.42 1.52 1.62 1.82 2.02 2.18 2.28 2.53
335 1.04 1.30 1.46 1.56 1.67 1.88 2.09 2.24 2.35 2.61
340 1.07 1.34 1.50 1.61 1.72 1.93 2.15 2.31 2.42 2.68
345 1.11 1.38 1.55 1.66 1.77 1.99 2.21 2.38 2.49 2.76
350 1.14 1.42 1.59 1.71 1.82 2.05 2.28 2.45 2.56 2.85
355 1.17 1.46 1.64 1.76 1.87 2.11 2.34 2.52 2.63 2.93
360 1.20 1.51 1.69 1.81 1.93 2.17 2.41 2.59 2.71 3.01

Suggested limits are based on Joulage Limit rules used at Halo Mill: Proving Grounds, and is the equivalent of 400fps, using 0.20g BB resulting in an upper limit of 1.49j.

Velocity BB Weight (Grams)
FPS 0.20 0.25 0.28 0.30 0.32 0.36 0.40 0.43 0.45 0.50
250 0.58 0.73 0.81 0.87 0.93 1.05 1.16 1.25 1.31 1.45
260 0.63 0.79 0.88 0.94 1.00 1.13 1.26 1.35 1.41 1.57
270 0.68 0.85 0.95 1.02 1.08 1.22 1.35 1.46 1.52 1.69
280 0.73 0.91 1.02 1.09 1.17 1.31 1.46 1.57 1.64 1.82
290 0.78 0.98 1.09 1.17 1.25 1.41 1.56 1.68 1.76 1.95
300 0.84 1.05 1.17 1.25 1.34 1.51 1.67 1.80 1.88 2.09
310 0.89 1.12 1.25 1.34 1.43 1.61 1.79 1.92 2.01 2.23
320 0.95 1.19 1.33 1.43 1.52 1.71 1.90 2.05 2.14 2.38
330 1.01 1.26 1.42 1.52 1.62 1.82 2.02 2.18 2.28 2.53
340 1.07 1.34 1.50 1.61 1.72 1.93 2.15 2.31 2.42 2.68
350 1.14 1.42 1.59 1.71 1.82 2.05 2.28 2.45 2.56 2.85
360 1.20 1.51 1.69 1.81 1.93 2.17 2.41 2.59 2.71 3.01
370 1.27 1.59 1.78 1.91 2.03 2.29 2.54 2.73 2.86 3.18
380 1.34 1.68 1.88 2.01 2.15 2.41 2.68 2.88 3.02 3.35
390 1.41 1.77 1.98 2.12 2.26 2.54 2.83 3.04 3.18 3.53
400 1.49 1.86 2.08 2.23 2.38 2.68 2.97 3.20 3.34 3.72
410 1.56 1.95 2.19 2.34 2.50 2.81 3.12 3.36 3.51 3.90

Suggested limits are based on Joulage Limit rules used at Halo Mill: Proving Grounds, and is the equivalent of 500fps, using 0.20g BB resulting in an upper limit of 2.32j.

Velocity BB Weight (Grams)
FPS 0.20 0.25 0.28 0.30 0.32 0.36 0.40 0.43 0.45 0.50
250 0.58 0.73 0.81 0.87 0.93 1.05 1.16 1.25 1.31 1.45
260 0.63 0.79 0.88 0.94 1.00 1.13 1.26 1.35 1.41 1.57
270 0.68 0.85 0.95 1.02 1.08 1.22 1.35 1.46 1.52 1.69
280 0.73 0.91 1.02 1.09 1.17 1.31 1.46 1.57 1.64 1.82
290 0.78 0.98 1.09 1.17 1.25 1.41 1.56 1.68 1.76 1.95
300 0.84 1.05 1.17 1.25 1.34 1.51 1.67 1.80 1.88 2.09
310 0.89 1.12 1.25 1.34 1.43 1.61 1.79 1.92 2.01 2.23
320 0.95 1.19 1.33 1.43 1.52 1.71 1.90 2.05 2.14 2.38
330 1.01 1.26 1.42 1.52 1.62 1.82 2.02 2.18 2.28 2.53
340 1.07 1.34 1.50 1.61 1.72 1.93 2.15 2.31 2.42 2.68
350 1.14 1.42 1.59 1.71 1.82 2.05 2.28 2.45 2.56 2.85
360 1.20 1.51 1.69 1.81 1.93 2.17 2.41 2.59 2.71 3.01
370 1.27 1.59 1.78 1.91 2.03 2.29 2.54 2.73 2.86 3.18
380 1.34 1.68 1.88 2.01 2.15 2.41 2.68 2.88 3.02 3.35
390 1.41 1.77 1.98 2.12 2.26 2.54 2.83 3.04 3.18 3.53
400 1.49 1.86 2.08 2.23 2.38 2.68 2.97 3.20 3.34 3.72
410 1.56 1.95 2.19 2.34 2.50 2.81 3.12 3.36 3.51 3.90
420 1.64 2.05 2.29 2.46 2.62 2.95 3.28 3.52 3.69 4.10
430 1.72 2.15 2.40 2.58 2.75 3.09 3.44 3.69 3.86 4.29
440 1.80 2.25 2.52 2.70 2.88 3.24 3.60 3.87 4.05 4.50
450 1.88 2.35 2.63 2.82 3.01 3.39 3.76 4.04 4.23 4.70
460 1.97 2.46 2.75 2.95 3.15 3.54 3.93 4.23 4.42 4.91
470 2.05 2.57 2.87 3.08 3.28 3.69 4.10 4.41 4.62 5.13
480 2.14 2.68 3.00 3.21 3.42 3.85 4.28 4.60 4.82 5.35
490 2.23 2.79 3.12 3.35 3.57 4.02 4.46 4.80 5.02 5.58
500 2.32 2.90 3.25 3.48 3.72 4.18 4.65 4.99 5.23 5.81
510 2.42 3.02 3.38 3.62 3.87 4.35 4.83 5.20 5.44 6.04