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S&T UTG9/UMP-9 G3 AEG Sub-Machine Gun in Black (STAEG313BBK)
Key Features
- G3 Electronic Trigger Unit with integrated MOSFET
- Quick-change spring system for easy FPS tuning
- Folding stock for tight-space maneuverability
- Lightweight nylon fiber receiver with metal rails and barrel
- Ambidextrous controls (selector switch and mag release)
- Includes 14mm CCW mock suppressor for tactical styling
Compact. Nimble. Electronic. This thing was built to clear corners fast.
Description.
Sometimes, it’s not about firepower or flash. It’s about getting into tight spaces, snapping the muzzle up, and getting that first accurate shot off before the other guy even blinks. The S&T UTG9/UMP-9 G3 AEG Sub-Machine Gun doesn’t try to be flashy—it’s just built to work, and work fast. Whether you're diving into CQB rooms or weaving through cover in a high-speed skirmish, this thing is made for movement.
Based loosely on the HK UMP-9 platform, this sub machine gun replica shrinks the footprint of a full-size airsoft assault rifle down into something you can practically wield one-handed. But don’t mistake its size for softness. Under the hood, you’ve got S&T’s latest G3 Electronic Trigger Unit running the show—a slick little system with magnetic sensors and an integrated MOSFET, giving you responsive trigger pulls, battery protection, and solid, repeatable firing every time.
The G3 unit isn’t just tech for tech’s sake either. There’s a smart low-voltage cutoff built right in. When your battery dips under 6.0V, it shuts down the system to prevent LiPo damage. That’s one less thing to worry about mid-fight, especially for players who like to push their gear hard.
Performance-wise, you’re looking at a very usable 300–370 FPS range depending on local limits and BB weight. More importantly, the rotary hop-up gives you precise vertical control, so you can dial it in whether you're running .20s or heavier ammo. The quick-change spring system lets you re-tune your power level without cracking the whole gearbox open—big win for players bouncing between indoor and outdoor fields.
The externals are what you’d expect from a modern SMG: tough nylon fiber receiver to keep weight down, metal rails and barrel where it matters. It’s solid, no creaks, and just enough heft to feel real without slowing you down. The included 14mm CCW mock suppressor threads right on and gives it that aggressive front-end look while also giving you suppressor or tracer unit options if that’s your thing.
Controls are ambi. Fire selector and mag release both work from either side—lefties, rejoice. The mag is a 100-round mid-cap, so you’ve got plenty of ammo without the rattle of a high-cap, and reloads stay slick and streamlined. The folding stock clicks in firm when collapsed and gives you extra control when deployed, with a good length of pull and cheek weld. It’s practical stuff, done right.
Other Great Features are,
- Battery compartment in stock
- Compatible with most standard 9mm-style SMG mags (check fit before skirmish)
- Reinforced gearbox internals for long-term durability
- Sleek matte black finish for that no-nonsense tactical vibe
In the box:
- S&T UTG9/UMP-9 G3 AEG
- 100-round mid-cap magazine
- Mock suppressor (14mm CCW thread)
- User manual
Specifications
Model: S&T UTG9 / UST9 G3 (STAEG313BBK)
Gearbox: Custom V2 with Quick-Change Spring System
Trigger System: S&T G3 ETU with Magnetic Sensor & MOSFET
FPS: Approx. 300–370 FPS (0.20g BBs)
Energy: 1.15–1.27 Joules
Hop-Up: Adjustable rotary type
Magazine: 100-round mid-cap (STMAG41M)
Receiver: Nylon fiber polymer
Outer Barrel & Rails: Full metal
Length: 450mm folded / 685–880mm extended with suppressor
Weight: Approx. 2.63–2.8kg
Controls: Ambidextrous
Whether you’re running it as your main in tight CQB rooms or keeping it as a reliable secondary for close encounters, the UTG9 delivers. Clean, fast trigger. Reliable internals. Just the right size to duck, dive, and dominate.
See it listed cheaper somewhere else? Let us know—we'll beat it with our price match promise. No drama, just better value.
Sku :
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Product Reviews
Delivery Prices start from just £2.50 with free delivery on orders over £75 To the uk mainland *.
Tip - The easiest way to check the shipping cost for what you want to buy is put all of the stuff you want in to your basket. Then in your basket under the sub total there is a link for “Estimate Shipping & Tax” click this and fill in the details and it will tell you the shipping cost and if you qualify for free shipping
Free Shipping
Free shipping on orders over £75 To UK Mainland (excluding some parts of scotland)
Free shipping on orders over £100 To Northern Ireland & the Republic of ireland, Scottish highlands & islands, and I.O.M
Sorry we do not offer free shipping to the Channel Islands
Free shipping is a 5 working day service* (if you order Monday you get it the next Monday)
Delivery price (Mainland UK)
Royal Mail (depending on weight) (2 Days Delivery*) From £2.50
Economy (post as much as you want) (2 to 4 Days Delivery*) £4.95 Flat Rate
Express shipping (post as much as you want) (1 to 2 Days Delivery*) £5.95 Flat Rate
*Working days (Saturday and Sunday are classed as non working days)
we can arrange a Saturday delivery on request but costs £20 and you will need to call us to pay the balance after making an order.
Delivery price (Ireland, Scottish Highlands & Islands)
Northern Ireland From £ 5.95
Highlands and islands From £5.95
I.O.M From £5.95
Republic of Ireland £6.95 (Flat Rate how ever big or small your order is)
Channel Islands £ 7.95 (Flat Rate how ever big or small your order is)
Delivery price (International Tracked)
(Flat Rate how ever big or small your order is)
Republic of Ireland (IRL)---- £6.95 Price Drop WAS £16
Belgium (BE)--------------- £7.95 Price Drop WAS £15
Netherlands (NL)---------- £6.95 Price Drop WAS £15
Germany (DE)-------------- £6.95 Price Drop WAS £25
Luxembourg (LUX)--------- £9.95 - NEW
France (FR)----------------- £9.95 Price Drop WAS £25
Austria (AT)---------------- £11.95 - NEW
Greece (GR)---------------- £12.95 - NEW
Sweden (SE)-------------- £14.95 - NEW
Denmark (DK)------------ £9.95 Price Drop WAS £15
Finland (FI)--------------- £15.95 - NEW
Italy (IT)------------------ £11.95 Price Drop WAS £16
Portugal (PT)------------- £11.95 Price Drop WAS £18
Poland (PL)----------------- £9.95 - NEW
Spain (ES)----------------- £12.95 Price Drop WAS £23
Sweden (SE)-------------- £11.95 Price Drop WAS £15
Slovakia (SK)------------- £11.95 - NEW
Slovenia (SL) ------------ £11.95 - NEW
Croatia (HR)-------------- £16.95 - NEW
Czech Republic (CZ)----- £10.95 - NEW
Hungary (HU)------------ £10.95 - NEW
Bulgaria (BG)------------ £14.95 - NEW
Romania (RO)------------ £13.95 - NEW
Switzerland (CH)--------- £12.95 - NEW
Turkey (TR)--------------- £17.95 NEW
Channel Islands ----------£ 7.95 Price Drop WAS £15
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