S&T UST9 G3 SMG-9 Submachine Gun AEG

S&T
Code: STAEG313BBKO
1,709.00 kr.
  • 6.05mm Tightbore inner barrel
  • MOSFET pre-installed - 23RPS ROF
  • Full metal construction - Mostly polymer like the real thing

If you are in the market for a new SMG and you want something that stands out, the S&T UST9 has its own unique look and the performance to back it up! The UST9 is built exactly like the real thing; with a high-density polymer body, metal outer barrel and steel body pins to keep everything firmly together while allowing for quick disassembly. This results in a lightweight and strong platform which does not compromise on realism!

S&T has also added some thoughtful pre-upgraded parts to the UST9 formula; offering a 6.05mm tightbore inner barrel to improve accuracy with less risk of a jam than tighter bores, a pre-installed MOSFET to improve trigger response and rate of fire and a quick change spring system for easy power tuning without needing to open the gearbox shell. If you want an SMG that is realistically built and not an SMG-5 or SMG-7, the UST9 should do the trick!

Full description

Description

Those looking for a realistic SMG replica that is less commonly seen; the UST9 should be right up your street! This SMG is built just like the real thing, with a high-density polymer body, alloy outer barrel, 20mm rails and steel body pins, making it as realistic as it is lightweight.

With a side folding skeleton stock, more 20mm Picatinny rails than many will ever need and ambidextrous controls, the UST9 is easy to wield with its intuitive controls and flawless layout and is nice and short; perfect for close-quarters action or aggressive playstyles. The internals also sidesteps the average AEG, offering a 6.05mm tightbore inner barrel, a pre-installed MOSFET, 7mm slide bearings and a quick change spring system to keep the UST9 competitive with other pre-upgraded Airsoft SMGs. If AR-9s and SMG-5s don't float your boat, the UST9's more modern aesthetic should keep you satisfied!

Starting at the tip of the alloy outer barrel we can find a knurled thread protector concealing 14mm CCW male threading beneath, ready for either the included suppressor to be mounted or an alternative suppressor, tracer unit or flash hider, depending on your style. We advise being careful not to overtighten a threaded device or the thread protector as the male thread at the barrel's tip is attached via a female thread. 

Following this, we come to the receiver which is constructed from high-density polymer and has a textured matt finish applied. The feel of the polymer on this AEG is fantastic, matching high-end AR36 and other full polymer replicas with its textured, fibre-reinforced feel. The perk of polymer construction is that your AEG will be far less prone to scratches and other damage which can make the gun look scruffy and in this case, polymer is realistic as the real SMG the UST9 is based on is almost entirely polymer!

As we move rearwards we come to the handguard, which is furnished with removable 20mm Picatinny accessory rails at the 3, 6, and 9 o'clock positions. These rails allow you to mount vertical or angled foregrips, and lasers or tactical flashlights should your mission require it. If you prefer to run the UST9 slick and save a bit of weight, these rails can be removed, as can the front sling point/hand stop. The hand stop is a great addition to keep your hand well clear of the barrel, avoiding painful self-inflicted hand shots and giving the UST9 its recognisable silhouette. 

Above the handguard, we can find the charging handle which is derived from the famous SMG-5, and sports similar ergonomics with a more modern look to suit the rest of the UST9's externals. Pulling the charging handle back and locking it up into the "safety notch" will provide access to the rotary HOP-up unit, which is accessible through the ejection port located on the right side of the SMG. The HOP-up unit is constructed from polymer and turning the rotary dial will allow you to adjust the amount of backspin applied to your BBs and tune the UST9 for your choice of ammo weight, looking for the flattest possible trajectory.

The receiver of the UST9 is designed to be both caveman-simple and to provide familiar AR-15 style ergonomics with fully ambidextrous controls. These requirements were conceived for the fact that the real firearm was designed to replace the SMG-5 and supplement the M4A1 in service with Law Enforcement and SWAT special units.

Along the top of the receiver, we can find a 20mm Picatinny rail which allows red dot sights, scopes and magnifiers to be mounted directly, with no need for additional scope mounts. This rail is approximately 12cm long, providing enough space for even a red dot and magnifier combo without being excessively long and increasing the SMG's weight. The top rail can also be removed if you prefer to challenge yourself using the iron sights!

At the front and rear of the receiver, we can find the integrated aperture iron sights, the rear of which boasts both an open style sight and aperture sight which you can select by flipping the sight aperture inside its mount. The front iron sight is concealed inside a protective ring to prevent bumps and scrapes from upsetting your sight picture. The rear sight is fully adjustable for windage and elevation using an Allen key and the selectable aperture means you can use the finer aperture for precise shots in good lighting, and switch to the open aperture for low light work, and full auto.

The fire selector is similar in design to the AR-36, with an ultra-short and fast 45-degree throw between the fire modes, each of which is indicated with a bullet-style pictogram. The fire selector is positioned just above the grip and is present on either side to allow both left and right-handed users to operate the UST9 intuitively. The magazine release is centrally positioned, just in front of the trigger guard, and is also accessible from both sides.

The lefty-friendly aspects of this SMG aren't only relevant for southpaws; they can also be an asset to a CQB-oriented player who likes to make the most of surrounding cover by carrying out a "shoulder to shoulder transition". This technique means you switch shoulders when rounding offhand corners and present a far smaller target to the enemy. This technique is the bread and butter of CQB domination, and the UST9 is ready to take pure advantage!

The only control which is not either ambidextrous or lefty-friendly is the dummy bolt catch, which does nothing on an Airsoft AEG but is nonetheless included for realism. The dummy bolt catch is a separate part, avoiding tell-tale signs of the UST9 being a replica, and is positioned in the centre left of the receiver, just like an M4.

Another M4-like feature of the UST9 is its pistol grip, which combines the comfortable angle and flared-out shape of the AR36 platform with the textured sides of the "A2" style M4 grip. This grip is very comfortable for practically any hand size and works well even when wearing thicker gloves thanks to its textured sides. The trigger guard is an enlarged type, similar to that of the SMG-5 and AR36, making it suitable for any level of finger protection, other than mittens! The trigger guard runs forward to meet the magazine well and will keep any protrusions away from the trigger, reducing snag points and preventing negligent discharges.

On the left side of the upper receiver, we come to our receiver sling point which is ideally positioned for use with a single-point bungee sling. This sling point can also be used in combination with the front sling point/hand stop if you prefer to use a two-point sling setup. The stock also includes two sling holes, furthering your slinging options and allowing a lot of flexibility without the need to purchase additional adapters or mounts. The sling points are of the classic HK style and are quite small, so we recommend either using a loop of paracord or a keyring if your sling hooks are too big to pass through.

The battery compartment of the S&T UST9 is located inside the receiver itself and is accessible with the stock folded to the side. With the stock folded you will see a battery compartment door; pulling this slightly downwards allows it to be opened, revealing the battery compartment and the mini-Tamiya battery connector within. The UST9 is designed for AK style stick batteries, but can also fit a more compact buffer tube style battery for an easier fit and a swifter battery change. For the UST9 we recommend a 7.4V 1300mAh LiPo stick battery in AK stick configuration as most standard buffer tube style stick batteries are a bit too wide to fit comfortably. 

The UST9's folding stock is of a fixed length but is designed to provide a better cheek weld than the legacy SMG-5 sliding stock, and it does a great job of this. The stock has a comfortable curved cheek area with a rubberised surface, allowing you to get a good sight picture and not grate your face like you might using an SMG-5. The butt plate is also constructed from rubber to provide exceptional grip for either wet weather use or when wearing body armour. This style of stock has since found its way onto SMG-5 variants and grenade launchers and is also offered with slight changes as a "pistol brace" in the US, indicating a clear win for its design and ergonomics.

If you are a fan of a realistic SMG platform but you still want to hurl yourself around the CQB site like a bull in a china shop, the UST9's low weight, compact size and realistic build lends itself well to the role. With an included suppressor, a Tokyo Marui compatible version 3 gearbox with full upgrade compatibility and more than its fair share of pre-upgraded parts installed, the UST9 brings the heat, both on the outside and internally!

Features

  • Full metal construction - Mostly polymer, like the real thing
  • 6.05mm Tightbore inner barrel - Improved accuracy and FPS
  • 14mm CCW Male threaded outer barrel - Ready for suppressors & tracer units
  • MOSFET Pre-installed - Improves trigger response, rate of fire and protects your battery
  • Suppressor included - Mounts to 14mm CCW male outer barrel threads
  • Removable hand stop pre-installed - Keeps your hand clear of the barrel, 2 sling points built-in
  • Removable 20mm Picatinny side and bottom rails - Add lasers, flashlights and grips or remove for a slick front end
  • 20mm Picatinny railed receiver - Ready for a red dot sight or scope
  • Adjustable iron sights - Open or Aperture rear sight, adjustable for windage and elevation
  • Sling points: 2 on the hand stop, one on the receiver and one on the stock - Ready for single or two-point slings
  • Skeleton Side folding stock - Fold for storage or close quarters, rubber butt plate & cheek piece
  • Ambidextrous fire selector switch - SAFE - SEMI - AUTO, perfect for left or right-handed shooters
  • Enlarged trigger guard - Easy access to the trigger, even when wearing thick, full-finger gloves
  • Ambidextrous magazine release - Centrally positioned for easy left or right-handed access
  • Charging handle "safety notch" functional - Lock the mock bolt back for convenient HOP-up adjustment
  • Rotary adjustable HOP-up unit - Behind the mock bolt, adjust the HOP-up to tune for different ammo weights
  • Version 3 Gearbox - Tokyo Marui compatible internals, 7mm slide bearings & quick change spring system
  • Compatible with S&T UST9 Magazines

Package Includes

  • S&T UST9 G3 SMG-9 Submachine Gun AEG
  • 100rnd Mid-cap magazine
  • Suppressor
  • User manual

Specification

General

Weapon Construction External
Weapon Type
Submachine Gun
Over 18 Only Icon
Over 18
Yes
Icon UKARA - United Kingdom Airsoft Retailer Association
Defence / UKARA Required
Yes, No,
FPS Icon
FPS (Feet Per Second), using 0.20g BB
Approx. 330fps ± 10%, using 0.20g BB
Site Legal Icon
Site Legal, using 0.20g BB
Yes
Screwdriver Icon
Pre-Built
Yes
Package
Included Items
  • Magazine
  • Suppressor
Skill Level Icon
User Skill Level
Regular Player
Patrol Base - Warning Icon
Warnings
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. 2.6kg
Weapon Length Collapsed
Length (Collapsed)
44.5cm
Weapon Length Extended
Length (Extended)
68cm

Construction

Colour Wheel Greyscale
Primary Colour
Black
Construction Icon
Construction
Steel body pins and screws. Alloy outer barrel, 20mm rails, magazine release, mock bolt & thread protector. High density polymer upper & lower receiver, stock & hand stop. Aluminium suppressor
Weapon Construction External
External Construction
Polymer
Alloy
Aluminium
Steel
Gearbox Icon
Internal Construction
Polymer
Alloy
Aluminium
Steel

Weapon Specific

Power Source Icon
Powered By
Electric
Blowback Icon
Blowback
None
Weapon Platform
Submachine Gun, SMG-45, SMG-9,
Magazine Style Icon
Magazine Style
Long Gun Magazine, Submachine Gun, SMG-9/UMP-9,
Fire Select Icon
Fire Selector
PatrolBase | Fire Select Safe
Safe
Patrol Base | Fire Select - Semi Automatic
Semi Automatic
Patrol Base | Full Automatic
Full Automatic
Fire Select Icon
Variant Fire Selector
None
Weapon Safety Features Icon
Safety Features
Trigger Lock
Shooter Configuration Icon
Shooter Configuration
Ambidextrous
Weapon Configuration Icon
Weapon Configuration
Standard
Weapon Scale Icon
Weapon Scale
1:1
Suggested BB Weight
0.25g

Hop-Up

Hop-Up Unit Icon
Hop-Up Unit
Yes
Hop-Up Unit Adjuster Icon
Hop-Up Adjuster
Rotary
Hop-Up Unit Location Icon
Hop-Up Location
Behind mock bolt carrier, accessible when the charging handle is pulled and the mock bolt is locked to the rear.

Furniture

Weapon Furniture Icon
Furniture
  • Railed Handguard
  • Suppressor
  • Railed Receiver
  • Ambidextrous Magazine Release
  • Ambidextrous Fire Selector
  • Ergonomic Pistol Grip
  • Threaded Outer Barrel
  • Handstop
  • Enlarged Trigger Guard
  • sling points front and rear
  • Adjustable open iron sights
  • Side folding stock
  • Aperture iron sights
  • Removable Proprietary Side 20mm rails
  • Thread Protector
Rail System Icon
Rail System
20mm RIS / RAS , 20mm Railed Receiver,
Icon Stock Positions
Stock Setting
Folding , Skeleton side folding stock,
Weapon Length Extended
Stock Positions
2 Position
Sight Type Icon
Sight Type
Iron Sights , Open Iron Sight, Aperture Iron Sight,
Sling Plate Icon
Sling Options
Stock , Handguard , Loop , Receiver ,

Barrel

Outer Barrel Length (in)
8''
Icon Thread Type
Outer Barrel Thread Type
Male
Icon Thread Direction
Outer Barrel Thread Direction
CCW (Counter Clockwise)
Outer Barrel Thread Size
14mm
Inner Barrel Diameter
6.05mm
Inner Barrel Length
200mm

Magazine Specific

Magazine Type
Medium Capacity , AEG,
Magazine BB Capacity
Approx. 100 Rounds
Magazine BB Fill Method
Speed Loader
Magazine BB Fill Location
Top

Electric Gun Specific Information

Gearbox
Gearbox Icon
Gearbox Version
V3 Gearbox
Wiring Icon
Gearbox Wiring
Top Wired
Spring Change Icon
Gearbox Quick Change Spring
Yes
Digital Trigger Icon
Gearbox Electronic Trigger
Yes
Split Gearbox Icon
Split Gearbox Design
No
Motor
Airsoft Motor Icon
Motor Type
Standard
Battery Specific
Battery Connector
Patrol Base | Icon | Mini Tamiya
Mini Tamiya
Compatible Battery
Compatible Battery Type
Li-Po
Compatible Battery Configuration
Stick
Compatible Battery Voltage
7.4v

Product Testing Data

Notepad Icon
Test Description
330 FPS +/- 10%
Notepad Icon
Tested Using
0.2g ASG BLASTER
Notepad Icon
Test Date
02/10/2023

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